{"id":"GHSA-j5vq-62gr-8v3r","revision":"3843070ba2a0485e85b4eaf0c8a07342","records":[{"revision":"3843070ba2a0485e85b4eaf0c8a07342","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-j5vq-62gr-8v3r","aliases":["CVE-2025-12689","GO-2025-4255"],"title":"Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in","description":"Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.","state":0,"publishedAt":"2025-12-17T21:30:48+00:00","modifiedAt":"2025-12-30T02:26:11.341605+00:00","affected":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-plugin-calls","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.11.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2025-12689","https://github.com/mattermost/mattermost-plugin-calls/commit/f68b41980e1274e05cf91c687e2af1a73c5e36ca","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"sourceUrl":"https://github.com/advisories/GHSA-j5vq-62gr-8v3r","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-j5vq-62gr-8v3r","identifiers":["GHSA-j5vq-62gr-8v3r","CVE-2025-12689","GO-2025-4255"]},"retained":false,"historicalAffected":[]}],"coverage":[]}