Vulnerability Description
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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25
- https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25d
- https://github.com/apostrophecms/apostrophe/releases/tag/[email protected]
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9
FAQ
What is CVE-2026-113657?
CVE-2026-113657 is a vulnerability with a CVSS score of 3.7 (LOW). 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 configura...
How severe is CVE-2026-113657?
CVE-2026-113657 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-113657?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.