CVE-2026-45011

The record

ApostropheCMS is an open-source Node.js content management system. Version 4.29.0 has a stored cross-site scripting vulnerability in the image widget functionality. A user with the Editor role can configure an image widget link to use a javascript: URL payload. Because editors have permission to publish pages, the malicious widget can be published to the live site. When another user, including an administrator or public visitor, clicks the affected image/link, arbitrary JavaScript executes in the victim’s browser. As of time of publication, no known patched versions are available.

Affected packages

Related vulnerabilities

• GHSA-5f64-7vfc-rcx6 Apostrophe has stored XSS via javascript: URL in Image Widget Link Same vulnerability
• CVE-2026-45013 ApostropheCMS is an open-source Node.js content management system. Also affects apostrophe
• CVE-2026-45012 ApostropheCMS is an open-source Node.js content management system. Also affects apostrophe
• GHSA-gf43-24g3-5hw2 Apostrophe has a Weak Password Recovery Mechanism for Forgotten Password and Improper… Also affects apostrophe
• GHSA-pr28-mf3q-qpg6 Apostrophe has authenticated SSRF in rich-text widget import via… Also affects apostrophe
• GHSA-c276-fj82-f2pq ApostropheCMS: Information Disclosure via choices/counts Query Parameters Bypassing… Also affects apostrophe
• GHSA-855c-r2vq-c292 Stored XSS in SEO Fields Leads to Authenticated API Data Exposure in ApostropheCMS Also affects apostrophe
• GHSA-97v6-998m-fp4g ApostropheCMS: Stored XSS via CSS Custom Property Injection in @apostrophecms/color-field… Also affects apostrophe