{"id":"GHSA-pwvr-grqg-7vp2","summary":"Mattermost Lack of Access Control Validation","details":"Mattermost versions 10.5.x \u003c= 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts","aliases":["CVE-2025-49810","GO-2025-3903"],"modified":"2025-08-29T20:55:49Z","published":"2025-08-21T09:30:21Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-08-21T16:02:54Z","nvd_published_at":"2025-08-21T08:15:30Z","cwe_ids":["CWE-863"],"severity":"LOW"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49810"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2025-3903"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.5.0"},{"fixed":"10.5.9"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 10.5.8","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-pwvr-grqg-7vp2/GHSA-pwvr-grqg-7vp2.json"}},{"package":{"name":"github.com/mattermost/mattermost/server/v8","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.0.0-20250721095846-c602a4a78e1f"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-pwvr-grqg-7vp2/GHSA-pwvr-grqg-7vp2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N"}]}