Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate to Media Manager panel
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DeliveryUpload disguised PHP payload
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ExploitBypass file-type restriction in media.php
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ExecutionRequest uploaded file URL
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PersistTrigger reverse shell
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ImpactExecute code as web app
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File type validation, storage isolation
MITRE ATT&CK
2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Requires an authenticated account with access to the CuteNews v2.1.2 Media Manager panel (an administrative/editor-tier privilege, matching CVSS PR:H) - this is the primary limiting factor and means the attacker must already be a trusted or compromised user, not an anonymous visitor. Given that access, exploitation is network-reachable with low complexity and no user interaction: the attacker uploads a dangerous-type file (PHP) that the media.php upload handler fails to restrict, then requests it to achieve code execution. There is no non-default configuration requirement beyond having the Media Manager feature enabled and reachable; the main defensive mitigations are restricting who holds Media Manager access, and upgrading past 2.1.2. |
| Impact | The provided CVSS 3.1 vector (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H = 7.2 High) describes a network-reachable, low-complexity flaw with total confidentiality/integrity/availability impact, but critically requires high privileges (PR:H) - an account with Media Manager panel access, which in CuteNews is an administrative/editor-tier role. This privilege gate is the single most important dampener on real-world risk. Corroborating signals point to LOW active-threat urgency: CISA SSVC scores Exploitation as 'none' and Automatable as 'no' (consistent with the need for authenticated, manual panel access), even though Technical Impact is 'total' (matching the C:H/I:H/A:H claim). No EPSS score, no CISA KEV listing, and no public POC are provided in the input. The signals are internally consistent rather than conflicting: high technical impact but a meaningful authentication precondition and no evidence of exploitation. This is a genuine RCE but not a mass-exploitation priority - treat as a patch-when-able hardening item for the small population running CuteNews, prioritized higher only where untrusted users hold Media Manager access. Note the CPE is a placeholder ('cpe:2.3:a:n/a:n/a') and EUVD affected versions read 'n/a n/a', so affected-version data is unreliable; the description explicitly names CuteNews v2.1.2. |
| Exploit ScenarioDerived | An attacker who already holds (or has phished/compromised) an account with Media Manager access logs into the CuteNews 2.1.2 admin panel and uploads a malicious PHP file that bypasses the media type restrictions in core/modules/media.php. They then request the uploaded file's URL to execute it, spawning a reverse shell and gaining code execution in the web application's context. No public exploit code is identified in the provided data, though a third-party disclosure repository (UmbraDeorum/cutenews-2.0-CVEs-2026-Disclosure) is referenced. |
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Alert meAnalysisAIv1 – Sep 21, 2026
Unrestricted file upload in CuteNews 2.1.2 allows an authenticated user who can reach the Media Manager panel to upload a file of a dangerous type - typically a PHP script - through core/modules/media.php and then request that file to execute arbitrary code in the web application's context; the researcher's disclosure notes this can be driven to a reverse shell and remote server access. The flaw is rated CVSS 3.1 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H), meaning total confidentiality, integrity, and availability impact once triggered, but it is gated behind high privileges: the attacker must already hold a Media Manager-capable (administrative/editor-tier) account. There is no public exploit identified at time of analysis, CISA's SSVC assessment records exploitation as 'none' and automatable as 'no', and no vendor-released patch has been identified at time of analysis.
RemediationAI
No vendor-released patch identified at time of analysis for CVE-2026-36467, and no fixed version is documented in the supplied references (the upstream repository https://github.com/CuteNews/cutenews-2.0 and the module at https://github.com/CuteNews/cutenews-2.0/blob/master/core/modules/media.php are the authoritative sources to monitor for a fix). Until an upgrade is published, the most effective compensating control is to enforce least privilege on the Media Manager: remove or tightly audit accounts with panel access, since the CVSS vector's PR:H and the independent assessment both make an authenticated Media Manager-capable account the single prerequisite - this shrinks the attack surface but does not protect against a compromised or malicious admin. Where uploads are not operationally required, disable or remove the Media Manager module entirely and block or filter requests to the media upload endpoint at the reverse proxy; the trade-off is loss of legitimate content-management functionality. Configure the web server so the directory receiving Media Manager uploads cannot execute PHP (for example disabling the PHP handler for that path), which neutralizes the 'upload then request' step but may break any feature that relies on serving processed scripts from that location. Additionally, deploy upload filtering at the perimeter (allow-list extensions/MIME types, WAF rules for PHP content in uploads) and monitor for newly written script files in upload directories plus outbound connections consistent with a reverse shell, noting that signature-based filtering can be bypassed by obfuscation and should be treated as defense in depth rather than a fix. Full technical details are available at https://github.com/UmbraDeorum/cutenews-2.0-CVEs-2026-Disclosure.
Affected VersionsENISA
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The root cause is CWE-434 (Unrestricted Upload of File with Dangerous Type): the upload handler in core/modules/media.php in CuteNews 2.1.2 does not adequately validate or restrict the type of file a user submits, so a dangerous extension such as .php can be written into a location that the underlying PHP/web server will later interpret and execute. This is the classic PHP 'upload a shell, then browse to it' pattern - the upload itself is the initial access primitive, and code execution, persistence, and lateral movement follow from requesting the uploaded artifact. The supplied CPE string (cpe:2.3:a:n/a:n/a) carries no vendor/product detail and the EUVD record likewise lists affected versions as 'n/a', so version scoping rests on the CVE description naming CuteNews v2.1.2 specifically; associated tags (PHP, RCE, File Upload) align with the CWE and the Media Manager attack surface. The independent assessment confirms the attack path requires only the Media Manager feature to be enabled and reachable, with no additional non-default configuration, making privilege restriction the key defensive lever since the vulnerability class itself provides no built-in barrier once an attacker has upload rights.
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Media Manager access is an elevated privileged role so PR:H; remote panel with low-complexity unrestricted upload yields full RCE, hence AV:N/AC:L and C/I/A:H.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
Unrestricted Upload of File with Dangerous Type in core/modules/media.php in CuteNews v.2.1.2 allows remote authenticated users with access to the Media Manager panel to execute arbitrary code in the context of the web application, leading to remote server access by triggering a reverse shell.
Executive ViewAI
CuteNews 2.1.2 contains a high-severity file upload flaw that could allow an authenticated attacker with high privileges to execute arbitrary code and potentially gain full control of the web server. Because exploitation requires a Media Manager-capable administrator or editor account, the immediate risk is concentrated in organizations that have weak privileged-account controls, unmonitored admin access, or unmaintained CuteNews installations. Leadership should care because a successful attack could lead to data theft, service disruption, and broader network compromise, even though no public exploit has been identified and no vendor-released patch is currently available.
Restrict Media Manager and upload access to trusted administrative networks; enforce a strict server-side allowlist for file types and block executable extensions such as .php, .phtml, and .php5; disable script execution in upload directories; monitor for file upload and execution anomalies; enforce least privilege and multi-factor authentication for administrative/editor accounts; and remove or isolate CuteNews 2.1.2 if it is not essential.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
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EUVD-2026-83989
GHSA-2j38-m62m-3qch
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB