EUVD-2026-86535
GHSA-wprj-f7qx-9mm8
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Unauthenticated anonymous comment submission (PR:N, AV:N, AC:L); stored XSS crosses into other users' browser context (S:C) with limited C/I and no availability impact.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
3DescriptionCVE.org
The AMP for WP - Accelerated Mobile Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via Regex Transformation in all versions up to, and including, 1.1.16 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The crafted payload uses only WordPress-permitted comment tags and attributes (an anchor with href and title), and the AMP sanitizer pipeline omits javascript: protocol blocking, meaning neither the comment save filter nor the AMP output stage removes the malicious URI introduced by the transformation.
Articles & Coverage 1
AnalysisAI
Stored cross-site scripting in the AMP for WP - Accelerated Mobile Pages WordPress plugin, affecting all versions up to and including 1.1.16, allows unauthenticated attackers to submit comment content that is transformed by a regex routine into an anchor carrying a javascript: URI, which the plugin's AMP sanitizer does not strip. The injected script persists in the database and executes in the browser of any visitor who loads the AMP-rendered version of the affected page, giving a scope-changed (S:C) impact rated CVSS 7.2 with PR:N (no authentication required), though realized exploitation depends on victims actually browsing the AMP output rather than the canonical page. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the AMP for WP - Accelerated Mobile Pages plugin (version <=1.1.16) to be active and serving AMP-rendered pages, and requires the target post to have comments enabled so an anonymous visitor can submit content. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but moderate-priority issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade the AMP for WP - Accelerated Mobile Pages plugin past the 1.1.16 affected boundary: the vendor references an upstream fix in the Trac changeset 3689899 for accelerated-mobile-pages (https://plugins.trac.wordpress.org/changeset?reponame=&old=3689899%40accelerated-mobile-pages&new=3689899%40accelerated-mobile-pages), so an upstream fix is available as a changeset/commit although a separately confirmed tagged release number is not established from the provided data - apply the first release newer than 1.1.16 as soon as it is installed through the WordPress plugin updater, and verify the installed version in the admin Plugins screen. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all WordPress sites for the AMP for WP plugin and identify any installation running version 1.1.16 or earlier; consider temporarily deactivating the plugin or disabling AMP output for comment sections to remove exposure. …
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External POC / Exploit Code
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