CVE-2026-83591 json
AMP for WP <= 1.1.16 - Unauthenticated Stored Cross-Site Scripting via Comment Content Regex Transformation
published 2026-09-25 45 d ago modified 2026-09-25 45 d ago also EUVD-2026-86535
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 45 d ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- mohammed_kaludi AMP for WP – Accelerated Mobile Pages
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/47ef0e19-8b67-42ad-b8e9-72b0dbe5e3a5?source=cve
- plugins.trac.wordpress.org /browser/accelerated-mobile-pages/tags/1.1.15/templates/features.php#L8823
- plugins.trac.wordpress.org /browser/accelerated-mobile-pages/tags/1.1.15/components/comments/comments.php#L89
- plugins.trac.wordpress.org /browser/accelerated-mobile-pages/tags/1.1.15/includes/features/functions.php#L314
- plugins.trac.wordpress.org /browser/accelerated-mobile-pages/tags/1.1.14/templates/features.php#L8823
- plugins.trac.wordpress.org /browser/accelerated-mobile-pages/tags/1.1.14/components/comments/comments.php#L89
- plugins.trac.wordpress.org /browser/accelerated-mobile-pages/tags/1.1.14/includes/features/functions.php#L314
- plugins.trac.wordpress.org /changeset?reponame=&old=3689899%40accelerated-mobile-pages&new=3689899%40accelerated-mobile-pages
Sources
- CVE List CVE-2026-83591
- NVD CVE-2026-83591
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.