LOW 3.7 NVD
CVE-2026-113657
ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. From sanitize-html 2.17.
ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. From sanitize-html 2.17.7 until 2.18.0, an application configuration that permits namespace-prefixed SVG animation elements and the relevant URL-targeting attributes can bypass the SMIL URL protection because prefixed tag names do not match the unprefixed animation-element check. The bypass can rewrite a link destination to an unsafe URI after the sanitized SVG is rendered, with script execution occurring when a user activates the affected link; the default sanitizer configuration is not unconditionally affected. This issue is fixed in sanitize-html 2.18.0.
References
- https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845c
- https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b35
- https://github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948
This low severity vulnerability with a CVSS score of 3.7 was published on 2026-10-20 via NVD.
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