{"schema_version":"1.3.1","id":"GO-2026-5833","modified":"2026-07-07T15:26:32Z","published":"2026-07-07T15:26:32Z","aliases":["CVE-2026-4646","GHSA-rmvv-8v8w-rf7x"],"summary":"Mattermost doesn't validate user-supplied input in API request handlers in github.com/mattermost/mattermost-plugin-github","details":"Mattermost doesn't validate user-supplied input in API request handlers in github.com/mattermost/mattermost-plugin-github","affected":[{"package":{"name":"github.com/mattermost/mattermost-plugin-github","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.0.1-0.20260330164815-c2840e980b3c"}]}],"ecosystem_specific":{}},{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.11.0+incompatible"},{"fixed":"10.11.15+incompatible"},{"introduced":"11.4.0+incompatible"},{"fixed":"11.4.5+incompatible"},{"introduced":"11.5.0+incompatible"},{"fixed":"11.5.4+incompatible"},{"introduced":"11.6.0+incompatible"},{"fixed":"11.6.1+incompatible"}]}],"ecosystem_specific":{}}],"references":[{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-rmvv-8v8w-rf7x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4646"},{"type":"FIX","url":"https://github.com/mattermost/mattermost-plugin-github/commit/c2840e980b3c2bd08db656eaa6a0fe26bcbf4695"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-5833","review_status":"UNREVIEWED"}}