{"cve":"CVE-2026-112951","nvd":{"published":"2026-10-20T16:17:05.940","modified":"2026-10-20T19:53:10.247","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf498","https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5ea","https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.34.0","https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-vmgj-9cwm-cf3h","https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-vmgj-9cwm-cf3h"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-112951","score":0.00304,"percentile":0.22923,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-vmgj-9cwm-cf3h","url":"https://osv.dev/vulnerability/GHSA-vmgj-9cwm-cf3h","summary":"ApostropheCMS: Color field validation bypass allows stored XSS via HTML appended after rgb()/hsl() prefix","modified":"2026-10-21T17:15:08.647725268Z","packages":[{"ecosystem":"npm","name":"apostrophe","purl":"pkg:npm/apostrophe","ranges":["<4.34.0"],"fixed":["4.34.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}