{"id":"GO-2026-4464","summary":"Mattermost Server has X.509 Improper Certificate Validation in github.com/mattermost/mattermost-server","details":"Mattermost Server has X.509 Improper Certificate Validation in github.com/mattermost/mattermost-server","aliases":["CVE-2017-18911","GHSA-m462-mqw4-2c8m"],"modified":"2026-02-19T20:41:26.362107Z","published":"2026-02-17T18:09:06Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-4464","review_status":"UNREVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-m462-mqw4-2c8m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18911"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/222bce0c5c1abb2f58c3a6de1fe8c5d3accffb21"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/691c18157025d4808b5b11de1d6de01050e54fa6"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/e9bb8cdfb4915067349a4840ab15ff941c4eb070"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.6.7-rc1+incompatible"},{"introduced":"3.7.0+incompatible"},{"fixed":"3.7.5+incompatible"},{"introduced":"3.8.0+incompatible"},{"fixed":"3.8.2+incompatible"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4464.json"}}],"schema_version":"1.7.3"}