AMP for WP <= 1.1.16 - Unauthenticated Stored Cross-Site Scripting via Comment Content Regex Transformation
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| mohammed_kaludi | AMP for WP – Accelerated Mobile Pages | up to 1.1.16 | — | No fix listed | CNA |
- AMP for WP – Accelerated Mobile Pages Vendormohammed_kaludi Affected up to 1.1.16 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-83591
- 2026-10-03 Alias added: GHSA-wprj-f7qx-9mm8
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/47ef0e19-8b67-42ad-b8e9-72b0dbe5e3a5?source=cve
- https://plugins.trac.wordpress.org/browser/accelerated-mobile-pages/tags/1.1.15/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/1.1.14/templates/features.php#L8823
- 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/changeset?reponame=&old=3689899%40accelerated-mobile-pages&new=3689899%40accelerated-mobile-pages
More mohammed_kaludi vulnerabilities
- TI-2024-08905 AMP for WP – Accelerated Mobile Pages <= 1.0.99.1 - Cross-Site Request Forgery to Privilege Escalation CVSS 3.1HIGH 8.8
- TI-2026-05345 AMP for WP <= 1.1.12 - Authenticated (Author+) Arbitrary File Write via Role-Based Access… CVSS 3.1HIGH 7.5
- TI-2026-81640 Stored cross-site scripting in AMP for WP via shortcode attribute CVSS 3.1HIGH 7.2
- TI-2026-63639 WordPress Core Web Vitals & PageSpeed Booster plugin <= 1.0.31 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2024-00965 AMP for WP <= 1.0.93.1 - Authenticated(Contributor+) Arbitrary Post Deletion via amppb_remove_saved_layout_data CVSS 3.1MEDIUM 6.5
- TI-2023-06197 AMP for WP – Accelerated Mobile Pages <= 1.0.92 - Authenticated (Contributor+) Cross-Site Scripting via Shortcode CVSS 3.1MEDIUM 6.4
Sources
- CVE-2026-83591 · CVE Program
- CVE-2026-83591 · NVD
- FIRST EPSS
- GHSA-wprj-f7qx-9mm8 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences