{"id":"CVE-2026-112951","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-112951","generatedAt":"2026-10-28T02:57:14.732Z","title":"An authenticated user with edit rights can store arbitrary HTML after a valid color prefix.","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.","published":"2026-10-20T16:17:06.000Z","lastModified":"2026-10-20T19:53:10.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00304,"percentile":0.22941,"date":"2026-10-26","history":[{"date":"2026-10-21","score":0.00303,"percentile":0.2184}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-20T16:17:06.000Z","detail":{"score":"5.4","severity":"MEDIUM","publishedAt":"2026-10-20T16:17:05.940Z"},"summary":"New CVE, medium severity (CVSS 5.4)."}],"references":[{"url":"https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf498","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5ea","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/releases/tag/apostrophe@4.34.0","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-vmgj-9cwm-cf3h","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-vmgj-9cwm-cf3h","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112951","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}