CVE-2026-33889 ApostropheCMS: Stored XSS via CSS Custom Property Injection in `@apostrophecms/color-field` Escaping Style Tag Context

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a stored cross-site scripting vulnerability in the @apostrophecms/color-field module, where color values prefixed with -- bypass TinyColor validation intended for CSS custom properties, and the...

CVE-2026-33889 ApostropheCMS: Stored XSS via CSS Custom Property Injection in `@apostrophecms/color-field` Escaping Style Tag Context

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a stored cross-site scripting vulnerability in the @apostrophecms/color-field module, where color values prefixed with -- bypass TinyColor validation intended for CSS custom properties, and the...

CVE-2026-33889

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a stored cross-site scripting vulnerability in the @apostrophecms/color-field module, where color values prefixed with -- bypass TinyColor validation intended for CSS custom properties, and the...

CVE-2026-33889

Affecting ApostropheCMS up to version 4.28.0, a stored XSS flaw exists in the @apostrophecms/color-field module. Unsanitized color values prefixed with -- bypass TinyColor validation for CSS custom properties, and launder.string() performs only type coercion, not HTML metacharacter stripping. Thi...

CVE-2026-33888 ApostropheCMS: publicApiProjection Bypass via `project` Query Builder in Piece-Type REST API

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain an authorization bypass vulnerability in the getRestQuery method of the @apostrophecms/piece-type module, where the method checks whether a MongoDB projection has already been set before applying...

CVE-2026-33888 ApostropheCMS: publicApiProjection Bypass via `project` Query Builder in Piece-Type REST API

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain an authorization bypass vulnerability in the getRestQuery method of the @apostrophecms/piece-type module, where the method checks whether a MongoDB projection has already been set before applying...

CVE-2026-33888 ApostropheCMS: publicApiProjection Bypass via `project` Query Builder in Piece-Type REST API

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain an authorization bypass vulnerability in the getRestQuery method of the @apostrophecms/piece-type module, where the method checks whether a MongoDB projection has already been set before applying...

CVE-2026-33888

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain an authorization bypass vulnerability in the getRestQuery method of the @apostrophecms/piece-type module, where the method checks whether a MongoDB projection has already been set before applying...

CVE-2026-33888

ApostropheCMS (Node.js) before version 4.29.0 is affected by an authorization bypass in the getRestQuery method of the @apostrophecms/piece-type module. An unauthenticated user can add a project query parameter in the REST API request, which is processed by applyBuildersSafely prior to permission...

CVE-2026-33877

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a timing side-channel vulnerability in the password reset endpoint /api/v1/@apostrophecms/login/reset-request that allows unauthenticated username and email enumeration. When a user is not found,...

CVE-2026-33877 ApostropheCMS: User Enumeration via Timing Side Channel in Password Reset Endpoint

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a timing side-channel vulnerability in the password reset endpoint /api/v1/@apostrophecms/login/reset-request that allows unauthenticated username and email enumeration. When a user is not found,...

CVE-2026-33877 ApostropheCMS: User Enumeration via Timing Side Channel in Password Reset Endpoint

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a timing side-channel vulnerability in the password reset endpoint /api/v1/@apostrophecms/login/reset-request that allows unauthenticated username and email enumeration. When a user is not found,...

CVE-2026-33877 ApostropheCMS: User Enumeration via Timing Side Channel in Password Reset Endpoint

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a timing side-channel vulnerability in the password reset endpoint /api/v1/@apostrophecms/login/reset-request that allows unauthenticated username and email enumeration. When a user is not found,...

CVE-2026-33889

creationtimestamp| type| source ---|---|--- 2026-04-15 16:55:53+00:00| published-proof-of-concept| https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-97v6-998m-fp4g...

CVE-2026-33889: Improper Neutralization of Input During Web Page Generation

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a stored cross-site scripting vulnerability in the @apostrophecms/color-field module, where color values prefixed with -- bypass TinyColor validation intended for CSS custom properties, and the...

PT-2026-33172

Name of the Vulnerable Software and Affected Versions ApostropheCMS versions prior to 4.29.0 Description A stored cross-site scripting issue exists in SEO-related fields, specifically the SEO Title and Meta Description. User-controlled input is rendered without proper output encoding into HTML...

CVE-2026-40186: Improper Neutralization of Input During Web Page Generation

ApostropheCMS is an open-source Node.js content management system. A regression introduced in commit 49d0bb7, included in versions 2.17.1 of the ApostropheCMS-maintained sanitize-html package bypasses allowedTags enforcement for text inside nonTextTagsArray elements textarea and option...

CVE-2026-35569: Improper Neutralization of Input During Web Page Generation

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a stored cross-site scripting vulnerability in SEO-related fields SEO Title and Meta Description, where user-controlled input is rendered without proper output encoding into HTML contexts includin...

ApostropheCMS security vulnerability

ApostropheCMS is a full-stack content management system open source by Apostrophe Technologies. Version 4.28.0 of ApostropheCMS has a security vulnerability. This vulnerability stems from the sanitize-html package’s ability to bypass the allowedTags enforcement mechanism, potentially leading to...

CVE-2026-33888: Incorrect Authorization

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain an authorization bypass vulnerability in the getRestQuery method of the @apostrophecms/piece-type module, where the method checks whether a MongoDB projection has already been set before applying...