{"schema_version":"1.7.3","id":"GO-2026-4305","published":"2026-02-26T16:27:46Z","modified":"2026-02-26T18:56:14.893765Z","aliases":["CVE-2017-18903","GHSA-fcwg-45jh-5qhf"],"summary":"Mattermost Server vulnerable to CSRF if CORS is enabled in github.com/mattermost/mattermost-server","details":"Mattermost Server vulnerable to CSRF if CORS is enabled in github.com/mattermost/mattermost-server.\n\nNOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.\n\n(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)\n\nThe additional affected modules and versions are: .","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":"3.9.2+incompatible"},{"introduced":"3.10.0+incompatible"},{"fixed":"3.10.2+incompatible"}]}],"ecosystem_specific":{"custom_ranges":[{"events":[{"introduced":"3.10.0-rc1"}],"type":"ECOSYSTEM"}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4305.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-fcwg-45jh-5qhf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18903"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/312269ad0bd166174f07f9df7391fce714601600"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/4519b03d95e8bfe1b2f74094673ae1a2f39f6b47"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/a18479df0940be8503c9b88993490741793eba9e"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"review_status":"UNREVIEWED","url":"https://pkg.go.dev/vuln/GO-2026-4305"}}