EUVD-2026-64788
GHSA-4r3f-c7x3-6vc2
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Contributor authentication required (PR:L), victim must view payload (UI:R), scope changes to victim browser session (S:C); XSS alone creates no meaningful availability impact, so A:N.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Lifecycle Timeline
1DescriptionCVE.org
Contributor Cross Site Scripting (XSS) in Magazine Blocks <= 1.8.6 versions.
AnalysisAI
Cross-site scripting in ThemeGrill's Magazine Blocks WordPress plugin (versions ≤1.8.6) enables an authenticated Contributor to inject malicious scripts into block content that execute in a victim's browser upon page view. The CVSS scope-change metric (S:C) reflects that injected code escapes the plugin context and runs in the victim's browser session, potentially allowing session token theft or unauthorized admin actions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold at minimum a Contributor-level WordPress account (CVSS PR:L confirmed); sites where contributor registration is open or where credentials have been compromised are the primary risk group. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.5 Medium score reflects a network-accessible flaw (AV:N) with low complexity (AC:L) and a scope change (S:C), partially offset by the low-privilege authentication prerequisite (PR:L - Contributor role) and mandatory user interaction (UI:R). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or obtains a Contributor-level account on a WordPress site running Magazine Blocks 1.8.6, then crafts a post or page embedding a malicious JavaScript payload within a Magazine Blocks element. When a site administrator or editor loads the affected page - for instance during content review - the script executes in their browser, potentially harvesting the administrator's session cookie or silently performing privileged WordPress actions such as creating a backdoor admin account. |
| Remediation | Update Magazine Blocks to a version higher than 1.8.6 as soon as a patched release is confirmed; monitor the WordPress plugin repository and the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/magazine-blocks/vulnerability/wordpress-magazine-blocks-plugin-1-8-6-cross-site-scripting-xss-vulnerability for the exact fix version, which was not independently confirmed in the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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