CVE-2026-83591
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.29% probability · 21th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
EPSS moved from 0.2% on 25 September 2026 to 0.3% on 26 October 2026.
References
- https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.14/components/comments/comments.php#L89
- https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.14/includes/features/functions.php#L314
- https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.14/templates/features.php#L8823
- https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.15/components/comments/comments.php#L89
- https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.15/includes/features/functions.php#L314
- https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.15/templates/features.php#L8823
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3689899%40accelerated-mobile-pages&new=3689899%40accelerated-mobile-pages
- https://www.wordfence.com/threat-intel/vulnerabilities/id/47ef0e19-8b67-42ad-b8e9-72b0dbe5e3a5?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.