MEDIUM 5.4 NVD
CVE-2026-112951
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, the color field accepts trailing content after a valid rgb() or hsl() prefix
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, the color field accepts trailing content after a valid rgb() or hsl() prefix because its TinyColor validation does not require the entire value to match a color. An authenticated user with edit rights can store arbitrary HTML after a valid color prefix. When the stored value is rendered, the payload executes, resulting in stored XSS. This issue is fixed in version 4.34.0.
References
- https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf49
- https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5e
- https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.34.0
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-vmgj-9cwm-cf3h
This medium severity vulnerability with a CVSS score of 5.4 was published on 2026-10-20 via NVD.
vulnfeed aggregates 16920 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.