{"id":"GO-2026-5325","revision":"138c801eaea245d2a4996954e7e10949","records":[{"revision":"138c801eaea245d2a4996954e7e10949","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5325","aliases":["CVE-2026-6340","GHSA-cjm8-jxpw-g43m"],"title":"Mattermost doesn't validate 7zip archive structure before processing in github.com/mattermost/mattermost-server","description":"Mattermost doesn't validate 7zip archive structure before processing 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: github.com/mattermost/mattermost-server/v5 before v5.3.2-0.20260325191733-fb11968f8798.","state":0,"publishedAt":"2026-06-25T18:43:19+00:00","modifiedAt":"2026-06-25T19:45:28.8434527+00:00","affected":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.11.0+incompatible"},{"kind":"fixed","version":"10.11.14+incompatible"},{"kind":"introduced","version":"11.4.0+incompatible"},{"kind":"fixed","version":"11.4.4+incompatible"},{"kind":"introduced","version":"11.5.0+incompatible"},{"kind":"fixed","version":"11.5.2+incompatible"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v5","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"8.0.0-20260325191733-fb11968f8798"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/advisories/GHSA-cjm8-jxpw-g43m","https://nvd.nist.gov/vuln/detail/CVE-2026-6340","https://github.com/mattermost/mattermost/commit/fb11968f8798925c7b75711025bc5f991124ba26","https://mattermost.com/security-updates"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5325","license":"OSV · upstream source license applies","key":"osv:GO-2026-5325","identifiers":["GO-2026-5325","CVE-2026-6340","GHSA-cjm8-jxpw-g43m"]},"retained":false,"historicalAffected":[]}],"coverage":[]}