Stored Cross-Site Scripting in the AcyMailing WordPress newsletter plugin (all versions up to and including 10.10.2) permits authenticated contributors to inject persistent arbitrary scripts via the unsanitized 'alignment' attribute across both the classic form builder and Gutenberg block editor code paths. Any user - including unauthenticated site visitors - who subsequently loads a page containing the injected element triggers script execution in their browser, enabling session hijacking, credential theft, or malicious redirects. No public exploit identified at time of analysis and no CISA KEV listing, though the CVSS scope change (S:C) correctly reflects the cross-user, cross-session impact characteristic of stored XSS.
Stored Cross-Site Scripting in the Customer Reviews for WooCommerce WordPress plugin (all versions ≤ 5.113.0) allows contributor-level authenticated users to inject arbitrary JavaScript via the 'color' attribute of the trust badge shortcode, which then executes in the browsers of every subsequent visitor to the compromised page. The trust badge rendering code in class-cr-trust-badge.php and badge-small.php fails to sanitize or escape shortcode attribute input before writing it to HTML output. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis; a patch commit is referenced in the WordPress SVN repository.
Stored Cross-Site Scripting in the Bookero.pl WordPress booking plugin (versions up to and including 2.2) allows authenticated contributors to permanently inject arbitrary JavaScript into WordPress pages via the `bookero_products` shortcode. The `bookero_products()` function in `libraries/bookero-front.php` (lines 173-174) concatenates the raw `hide_products` and `filter_products` attribute values directly into an inline `<script>` block with no sanitization or output escaping, meaning any page rendered with the poisoned shortcode will execute the attacker-supplied script in every visitor's browser. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA KEV catalog.
Stored Cross-Site Scripting in the Ultimate Post (PostX) WordPress plugin versions up to and including 5.0.31 allows authenticated contributors to permanently inject arbitrary JavaScript into WordPress pages via the 'moreResultsText' attribute of the advanced-search Gutenberg block. The root cause is a sanitization gap: the render callback applies wp_kses() which strips disallowed HTML tags but does not encode special characters like double quotes in attribute context, and the unsanitized value is then concatenated directly into the data-viewmoretext HTML attribute without esc_attr(), allowing attribute boundary escape. No public exploit code has been identified at time of analysis, and no EPSS data was provided, but the contributor-level access requirement represents the primary real-world friction point for exploitation.
Stored Cross-Site Scripting in the WordPress Download Manager plugin (all versions through 3.3.61) allows authenticated contributors to inject persistent JavaScript payloads via the 'note_before' and 'note_after' shortcode attributes. The root cause is an unescaped output sink in the shortcode renderer: although wp_kses_post filters post content on save for users lacking the unfiltered_html capability, kses-allowed tag and attribute combinations that survive filtering are passed directly to the unsafe sink and execute in victims' browsers when the injected page is rendered. No public exploit has been identified at time of analysis, and the vulnerability is not listed in the CISA KEV catalog.
Stored XSS in the Block, Suspend, Report for BuddyPress WordPress plugin (bp-toolkit) through version 3.6.4 allows low-privileged authenticated attackers to inject persistent malicious scripts via the 'link' parameter in report submissions. Authenticated users with subscriber-level access can plant JavaScript payloads that execute in any visitor's browser upon accessing the affected report pages, with Changed Scope (S:C) indicating execution in the victim's security context rather than the application's. No public exploit code has been identified at time of analysis and the vulnerability has not been added to CISA KEV, but on BuddyPress community sites with open registration the subscriber-level prerequisite is trivially satisfied.
Missing ownership enforcement on Sylius Shop API payment request endpoints allows any caller who possesses a valid payment request UUID hash to read sensitive order data - including customer email, shipping addresses, and order totals - or manipulate post-payment redirect URLs to an attacker-controlled domain. Affected versions span the 2.0.x, 2.1.x, and 2.2.x release lines, with fixes available in 2.0.18, 2.1.15, and 2.2.6 per the vendor advisory GHSA-mr9r-h354-966r. No public exploit code or CISA KEV listing has been identified at time of analysis; real-world exploitability is gated on acquiring the UUID hash out-of-band.
Secure upload bypass in Discourse exposes protected files through the pull_hotlinked_images feature, which fails to enforce the secure_uploads access control when processing posts containing a known secure URL. Affected instances are those running versions prior to 2026.6.0, 2026.5.1, 2026.4.2, or 2026.1.5 with the secure_uploads site setting enabled. No public exploit has been identified at time of analysis and this vulnerability is not listed in CISA KEV; however, the fix commits are publicly visible on GitHub, potentially aiding reverse-engineering of the flaw.
Restricted tag and tag-group name disclosure in Discourse exposes internal taxonomy metadata to anonymous and unauthorized users via the category and group API endpoints. All Discourse versions prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5 are affected when restricted tags or tag groups are configured on publicly readable categories. An unauthenticated actor can enumerate these names - which may contain sensitive organizational labels, project codenames, or internal classifications - using standard HTTP requests with no exploit tooling required. No public exploit code exists and this is not listed in CISA KEV; the CVSS 4.0 AT:P modifier confirms that exploitation requires a specific non-default configuration to be present.
Open WebUI versions 0.8.12 through 0.9.x expose a missing authorization flaw that permits authenticated non-admin users to reach restricted underlying AI models by exploiting a code-path divergence in task endpoints. The standard chat route (/api/v1/chat/completions) correctly re-validates submodel access after arena wrapper resolution, but task endpoints such as /api/v1/tasks/moa/completions call utils.chat.generate_chat_completion() directly, triggering arena fallback resolution after the wrapper check passes and recursing with bypass_filter=True - effectively nullifying the submodel access control. No public exploit has been identified and the vulnerability is not listed in CISA KEV, but the attack requires only low-privilege authentication (PR:L), making it directly relevant to any multi-tenant or enterprise Open WebUI deployment with model access tiering.
Insecure default OPC UA configuration in Siemens CPCI85 Central Processing/Communication and SICORE Base System exposes industrial control system functions to unauthenticated network attackers. Both products ship with all OPC UA security mechanisms disabled, meaning any attacker who can reach the OPC UA endpoint over the network can interact with the system without authentication or encryption. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog, but the affected products operate in OT/ICS environments where unauthorized control access carries disproportionate operational and safety risk relative to the moderate CVSS score.
Directory traversal and arbitrary file write in the decompress npm package (versions before 4.2.2) stem from a prefix-confusion flaw in path boundary validation using String.indexOf() at two locations in index.js. An attacker supplying a crafted archive can write files to filesystem directories adjacent to the intended extraction target - for example, escaping /tmp/app into /tmp/app_config - bypassing both the safeMakeDir function and the extraction path validation. This is a confirmed bypass of the prior fix for CVE-2020-12265; no public exploit has been identified at time of analysis and EPSS is low at 0.26% (17th percentile), though the integrity impact is rated high by CVSS.
Command injection in the Palo Alto Networks PAN-OS management plane allows an authenticated administrator to execute arbitrary OS commands with root privileges on PA-Series, VM-Series, and Panorama appliances. The vulnerability is classified CWE-78 and is reachable via the network-accessible management interface, though the requirement for administrator-level credentials substantially constrains the attacker pool. No public exploit code has been identified at time of analysis, and no active exploitation has been confirmed by CISA KEV.
Cross-site scripting in Microsoft Dynamics 365 Customer Voice allows a remote, unauthenticated attacker to inject script that executes in a victim's browser session and perform spoofing once the victim interacts with attacker-supplied content. The flaw carries a CVSS 9.3 rating driven largely by a scope change (S:C), meaning injected script escapes into a different security context. There is no public exploit identified at time of analysis and it is not listed in CISA KEV.
Reflected cross-site scripting in BiEticaret, a Turkish e-commerce platform by Inrove Software and Internet Services, enables remote unauthenticated attackers to inject and execute malicious JavaScript in victims' browsers by tricking them into clicking a crafted URL. All versions prior to v3.3.57 are affected across the full product line. No active exploitation has been confirmed by CISA KEV, and no public proof-of-concept has been identified at time of analysis; however, the low attack complexity and absence of authentication requirements make this straightforward to exploit once a target is socially engineered.
Reflected Cross-Site Scripting in the Mang Board WP WordPress plugin (all versions through 2.3.4) allows unauthenticated attackers to inject arbitrary JavaScript via the unsanitized 'stag' parameter, which executes in the browser of any user who clicks a crafted link. Wordfence's source-level analysis identifies the flaw spanning multiple plugin files including _header.php, func.board.php, and class.store.php. No active exploitation has been identified (not in CISA KEV) and no EPSS score was provided, but the PR:N/UI:R profile makes this a viable phishing-assisted attack against WordPress site administrators and editors.
Out-of-bounds read and reachable assertion vulnerabilities in Samsung's open-source Escargot JavaScript engine allow a local attacker to cause a denial of service and limited data manipulation by supplying crafted JavaScript input. All versions prior to commit 2dee22f5c7b8bf31cb7252d7731fae8c07f2842c are affected, with the primary real-world impact being an availability loss (crash) and low-confidence integrity effect. No public exploit code or CISA KEV listing has been identified at time of analysis.
Heap-based buffer overflow in Samsung's open-source Escargot JavaScript engine corrupts heap memory when processing maliciously crafted input, leading to a high-severity availability impact and a limited integrity impact. The vulnerability affects all Escargot releases before commit ef525f337fafddecde77a3c426212a84bb20cb98, targeting embedded and IoT contexts where the engine is deployed - most notably Samsung TV appliances. No public exploit identified at time of analysis, and no CISA KEV listing, but the local-vector, low-complexity nature of heap overflows makes this reliably triggerable once an attacker can supply crafted input to the engine.
Type confusion (CWE-843) in Samsung's open-source Escargot JavaScript engine enables pointer manipulation, leading to high-impact availability disruption and limited integrity compromise when processing malicious JavaScript. All Escargot versions prior to commit 779f6bedf58f334dec64b0a51ebb724b4708b84a are affected, with particular relevance to Samsung embedded and smart appliance ecosystems where this engine is deployed. No public exploit has been identified at time of analysis, and an upstream fix is available via GitHub PR #1580, though a formally versioned release has not been independently confirmed.
Out-of-bounds read and write vulnerabilities in Samsung's open-source Escargot JavaScript engine allow a local attacker to cause memory corruption leading to high availability impact and limited integrity compromise. All Escargot versions prior to commit 779f6bedf58f334dec64b0a51ebb724b4708b84a are affected, with the engine's primary deployment in Samsung TV appliance and IoT platforms. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in CISA KEV; however, the CVSS-assigned high availability impact and the buffer overflow primitive make crash-based denial-of-service the primary realistic threat.
Stack-based buffer overflow in Samsung's Escargot JavaScript engine enables local attackers to crash the engine or corrupt stack memory by supplying malicious JavaScript input, requiring user interaction to trigger. All Escargot releases prior to commit b30b63fc63b403907d8137da1c65aaa4521fe74e are affected, with impacts including high availability loss and limited integrity compromise. No public exploit identified at time of analysis and this vulnerability has not been added to CISA KEV, though the local-vector, user-interaction requirement meaningfully constrains real-world exploitation surface.
Traffic forwarding on Juniper QFX Series switches running Junos OS Evolved can be fully disrupted by an adjacent, unauthenticated attacker exploiting a race condition in the sFlow collector handler. When sFlow collector reachability changes trigger a next-hop entry update concurrently with the sFlow thread reading that same next-hop data, the evo-pfemand process crashes and all packet forwarding halts until the process automatically restarts. No public exploit code exists and this vulnerability is not listed in the CISA KEV catalog at time of analysis, but the availability impact is severe for any network segment relying on the affected switch.
Cross-tenant data exfiltration in Google Cloud Apigee (versions prior to 2026-06-12) is possible via improper input validation in the BigQuery Data Access Object (DAO) component. An authenticated attacker with high-privilege access can craft requests that bypass tenant isolation boundaries, accessing confidential data belonging to other Apigee tenants on Google Cloud Platform. Google patched this server-side on June 12, 2026 with no customer action required; no public exploit or CISA KEV listing has been identified at time of analysis.
Denial of service in body-parser npm middleware allows unauthenticated remote attackers to submit arbitrarily large HTTP request bodies when the package is misconfigured with an invalid `limit` option value. Affected versions span both the 1.x line (prior to 1.20.6) and 2.x line (prior to 2.3.0). The silent misconfiguration failure bypasses all payload size enforcement, enabling an attacker to exhaust server memory and CPU through oversized request flooding - though exploitation requires the specific precondition of an invalid limit setting, reflected accurately in the low CVSS score of 3.7. No public exploit or CISA KEV listing exists at time of analysis.
Multiple protection mechanism failures in the Data Loss Prevention (DLP) component of Palo Alto Networks Prisma Access Agent for Windows enable a local authenticated user to bypass DLP policy enforcement controls. Only the Windows platform is affected; the Prisma Access Agent for macOS is explicitly excluded per vendor advisory. No public exploit code or active exploitation has been identified at time of analysis, though the CVSS 4.0 supplemental urgency rating of Amber and high confidentiality/integrity impact on the vulnerable system make this a meaningful insider threat risk.
Stack-based buffer overflow in the Mercusys MW302R (EU) V1 1.4.10 Build 231023 administrative web interface allows an authenticated attacker with administrative access on the same network segment to crash the device by sending a specially crafted HTTP request. The crash results from control flow being redirected to an arbitrary instruction address - a classic CWE-121 stack overflow pattern that produces denial of service. No public exploit is confirmed in CISA KEV, though a researcher GitHub gist (BarrYPL/13dcd071673866cbbfaaa05085b98cf3) appears to document the finding and may constitute a proof-of-concept write-up. EPSS probability is very low at 0.16% (6th percentile), consistent with a niche consumer router model.
Improper certificate validation in the Palo Alto Networks Prisma Access Agent for iOS exposes VPN tunnel traffic to interception and manipulation by a network-adjacent attacker. The flaw (CWE-295) enables a man-in-the-middle position to defeat the agent's TLS/certificate trust chain, allowing an adversary to read or alter traffic that the iOS client believes is securely tunneled. Exploitation is limited to iOS deployments - the Windows, macOS, Linux, Android, and ChromeOS agents are confirmed unaffected. No public exploit code exists and the vulnerability is not listed in the CISA KEV catalog.
Stack buffer overflow in Vim's SAL sound-folding spell engine prior to version 9.2.0725 crashes the editor by writing a null byte one position past the end of a MAXWLEN-element stack buffer in spell_soundfold_sal(). Exploitation requires a user to open Vim with a SAL-based spell file active under a non-multibyte 8-bit encoding and trigger sound-based spell suggestions on a boundary-length word, corrupting the eval_soundfold() stack frame. No public exploit has been identified at time of analysis, and the impact is limited to availability (editor crash) with no confidentiality or integrity consequences.
Missing authentication on APIv1 webhook endpoints in sendportal up to 3.0.1 permits remote unauthenticated actors to invoke webhook handlers for SendGrid, Postmark, Postal, and Mailjet without any credential verification. The flaw enables integrity and availability manipulation of email processing pipelines from any network location. A publicly disclosed exploit exists per VulDB submission 851624; no vendor patch has been released and the maintainer has not responded to the responsible disclosure report.
Path traversal in the TOTOLINK X5000R router's OpenVPN Export CGI handler exposes arbitrary router filesystem files to remote unauthenticated attackers. The `exportOvpn` function within `/web/cgi-bin/cstecgi.cgi` fails to sanitize user-controlled path input, allowing directory traversal sequences to escape the intended export directory. A public proof-of-concept exists (GitHub: meishigana/CVE, referenced 2026-06-09), and the CVSS 4.0 supplemental metric E:P confirms exploit code is available, elevating practical risk beyond the moderate 5.5 base score.
SQL injection in code-projects Online Food Order System 1.0 exposes the `/edit_food_items.php` endpoint to unauthenticated remote database manipulation via the `update` parameter. The CVSS 4.0 vector (AV:N/AC:L/PR:N/UI:N) confirms this is remotely exploitable without authentication or special conditions, with limited but confirmed impact across confidentiality, integrity, and availability. A public exploit has been released (E:P), making opportunistic targeting realistic despite the niche deployment footprint; no patch or vendor advisory has been identified.
SQL injection in CodeAstro Simple Online Leave Management System 1.0 exposes the backend database to unauthenticated remote attackers through the `email` parameter at `/SimpleOnlineLeave/index.php`. Manipulation of this parameter allows an attacker to alter SQL query logic, enabling authentication bypass, database enumeration, and data modification without any credentials or user interaction. A public proof-of-concept exploit has been disclosed via GitHub, significantly lowering the skill barrier for exploitation; the vulnerability is not currently listed in the CISA KEV catalog.
Arbitrary hardlink creation in the decompress npm package (before version 4.2.2) enables read disclosure and overwrite of any file accessible on the same filesystem as the extraction directory. When a victim extracts an attacker-crafted archive, the library passes the hardlink target path (x.linkname) directly to Node.js fs.link() without any path sanitization, allowing a hardlink inside the extraction directory to point at any file the process has access to. No CISA KEV listing exists and EPSS stands at 0.17% (7th percentile), reflecting low observed exploitation; however, the provided CVSS I:N metric conflicts with the description's explicit mention of file-overwrite capability, and in automated CI/CD pipelines the user-interaction barrier is effectively eliminated.
Sensitive information disclosure in HCL DevOps Deploy / HCL Launch exposes credentials or operational data stored in application log files to any local user who can read those files. Affected across four major release branches (7.3, 8.0, 8.1, and 8.2), the vulnerability stems from CWE-532, where the application writes sensitive material into logs without adequate sanitization or access restriction. No public exploit code has been identified at time of analysis, and the flaw is not listed in the CISA KEV catalog, but the high confidentiality impact (C:H) and zero-privilege local access condition elevate real-world concern in multi-tenant or shared-host deployments.
Symlink-based extraction redirect in ChatterBot prior to 1.2.14 enables a local attacker with standard user privileges to cause training corpus archive contents to be written to an attacker-controlled directory by pre-planting a symlink at the predictable path ~/ubuntu_data/ubuntu_dialogs before UbuntuCorpusTrainer.extract() runs. The check-then-create pattern preceding tar.extractall() creates a CWE-367 TOCTOU window that, on shared multi-user systems, allows the attacker to intercept the extraction target without any race if the symlink is planted before the first training run. No public exploit has been identified at time of analysis, and a vendor-released patch is available in version 1.2.14.
CVE-2026-55564 has been reported by Ubuntu but carries no publicly available description, CVSS score, vector, or CWE classification at time of analysis. The affected product, vulnerability class, and impact scope are entirely unconfirmed from available intelligence. No assessment of attacker capability or victim exposure is possible without a description or vendor advisory detailing the flaw.
Incorrect authorization in Open WebUI versions 0.9.6 through 0.9.x allows authenticated users with read-only knowledge file access to escalate their privileges to file write or delete operations. The root cause is that `_verify_knowledge_file_access` validated only read permissions, while write and delete routes independently trusted access derived from writable model `meta.knowledge` entries - creating a logical gap where the authorization check and the actual enforcement were misaligned. No public exploit or CISA KEV listing is identified at time of analysis; this is a medium-severity, authenticated-only issue fixed in v0.10.0.
Stored cross-site scripting in Discourse's SVG upload and user avatar handling allows authenticated users to inject malicious JavaScript that executes in victims' browsers when they visit specific non-standard URLs. The CVSS scope change (S:C) reflects that successful exploitation crosses the browser security boundary, enabling session token theft or account takeover against victims who visit the triggering URL. Vendor-confirmed patches are available across four release branches; no public exploit code or CISA KEV listing has been identified at time of analysis.
Open WebUI versions 0.8.11 through 0.10.0 expose a missing-authorization flaw (CWE-862) on the POST /api/v1/images/edit endpoint, allowing any verified non-admin account to invoke server-side image editing even when administrators have disabled the global image-edit switch or revoked per-user image-generation permissions. The bypass enables unprivileged users to consume admin-configured third-party image provider credentials - exhausting API quotas or generating unauthorized images - undermining deliberate access controls set by the platform operator. No public exploit has been identified at time of analysis; a vendor-confirmed fix is available in version 0.10.0.
Path traversal in rattler_cache and py-rattler exposes the victim's filesystem to out-of-bounds file writes when package metadata from an untrusted conda channel contains path separators or directory traversal sequences in the build string. Users who install packages from a malicious channel trigger cache materialization logic that joins the unsanitized build string into a filesystem path, allowing package contents to land outside the configured cache directory. No public exploit has been identified and no CISA KEV listing exists; exploitation requires deliberate use of an untrusted channel (CVSS UI:R), meaningfully limiting real-world exposure.
CVE-2026-44978 has insufficient public data to characterize at this time. The only confirmed intelligence source is a Ubuntu vendor report, but no description, CVSS metrics, CWE classification, or affected product details are available in the current dataset. Security teams should treat this as an unresolved entry requiring further data gathering before risk assessment or remediation decisions can be made.
CVE-2026-55238 has insufficient public data to characterize at time of analysis. The sole intelligence source is a Ubuntu vendor report, with no description, no CVSS scoring, no CWE classification, and no advisory content available. Security teams should treat this as an unverified, uncharacterized vulnerability pending vendor disclosure. No exploitation status, affected product details, or impact scope can be determined from available data.
Stored XSS in Twiser OKRs & Goals (builds 28220 through pre-28398) allows authenticated low-privileged users to inject persistent malicious scripts that execute in other authenticated users' browsers. The CVSS scope change (S:C) confirms cross-user impact - a hallmark of stored XSS where one user's injected payload affects others who subsequently view the same content. No public exploit code or CISA KEV listing has been identified at time of analysis, placing this firmly in standard patch-cycle priority.
Unauthenticated access to the self-hosted HTTP transport of DeepSeek MCP Server (versions 1.4.2-1.7.x) allows any network-reachable client to initialize a valid MCP session, enumerate server tools, and invoke them without credentials - including `deepseek_chat`, which silently consumes the server operator's `DEEPSEEK_API_KEY`. Default Docker deployments expose port 3000 in HTTP mode out of the box, maximizing the attack surface for any container running on a network-accessible host. No public exploit has been identified at time of analysis, though the GitHub advisory references reproduced testing confirming the full bypass against commit `5e1302171e99`.
Insufficient data exists to characterize CVE-2026-55639 with confidence. The sole intelligence signal is a vendor source tag of 'ubuntu', suggesting the affected product is within the Ubuntu ecosystem, but no description, CVSS vector, CWE classification, or advisory text was provided. The vulnerability's impact, attack vector, and affected versions remain entirely uncharacterized from the available data.
Insufficient intelligence data exists to characterize CVE-2026-42218 beyond its association with the Ubuntu vendor source. No description, CVSS vector, CWE classification, or additional references were provided, making a substantive impact assessment impossible. Security teams should query Ubuntu Security Notices (USN) or the Ubuntu CVE Tracker directly for authoritative details on affected packages and severity.
Unauthenticated information disclosure in the GamiPress WordPress plugin (all versions through 7.9.4) allows any site visitor to read private activity log entries belonging to arbitrary users, including badge earnings, points balance changes, WooCommerce purchase events, LearnDash course completions, and BuddyPress activity records. The IDOR flaw in the 'access' parameter is rendered trivially exploitable because the sole authentication gate - a gamipress nonce - is deliberately broadcast to every front-end visitor via wp_localize_script, meaning no credential or privilege is required beyond loading any page on the target site. No public exploit code has been identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog, though the near-zero exploitation complexity makes it a practical mass-exploitation candidate against any unpatched deployment.
Memory exhaustion in Juniper Networks Junos OS and Junos OS Evolved snmpd allows an authenticated network attacker to crash SNMP monitoring by sending specific valid SNMPv3 queries that trigger an out-of-bounds write and progressive memory leak. The snmpd process will exhaust available memory over time, crash, and restart, rendering SNMP-based network monitoring unavailable for the duration of each crash cycle. No public exploit code has been identified at time of analysis, and this is not listed in CISA KEV; however, the CVSS 4.0 supplemental metric AU:Y indicates the attack is automatable.
Authorization bypass in the WP User Frontend (WPUF) WordPress plugin through version 4.3.7 allows unauthenticated visitors to delete guest-uploaded media attachments via the wpuf_file_del AJAX action. The plugin's sole access control gate - a WordPress nonce - is self-defeated: when any WPUF shortcode is rendered on a public front-end page, the nonce value is localized into publicly readable JavaScript objects (wpuf_upload and wpuf_frontend), making it trivially extractable by any browser visitor. No active exploitation has been confirmed (not in CISA KEV), and no public exploit code has been identified, but the zero-authentication, low-complexity attack path makes this trivially reproducible from plugin source code alone.
Discourse's post revision system exposes hidden edit history to unauthenticated network users through a serialization flaw in PostRevisionSerializer. When computing diffs between adjacent visible revisions, the serializer failed to enforce visibility restrictions, leaking content from revisions that moderators or administrators had marked as hidden. No active exploitation has been identified at time of analysis, but the unauthenticated, low-complexity attack vector means any visitor to a vulnerable Discourse instance can potentially access suppressed post content - including moderator-redacted material - without any credentials or special access.