{"id":"EUVD-2025-203891","revision":"2b908733fd6b4279a82d9a1bad14c862","records":[{"revision":"2b908733fd6b4279a82d9a1bad14c862","observedAt":"2026-10-27T21:50:11.691+00:00","statement":{"source":"euvd","id":"EUVD-2025-203891","aliases":["CVE-2025-13352","GHSA-jf5h-xfw4-p8gp"],"title":"Mattermost versions 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arb…","description":"Mattermost versions 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N","score":3,"severity":null}],"references":["https://mattermost.com/security-updates"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-203891","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Dec 17, 2025, 12:11:25 PM","dateUpdated":"Dec 17, 2025, 4:48:08 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2025-203891","identifiers":["EUVD-2025-203891","CVE-2025-13352","GHSA-jf5h-xfw4-p8gp"]},"retained":false,"historicalAffected":[]}],"coverage":[]}