{"id":"GHSA-r4fm-g65h-cr54","summary":"Mattermost incorrectly allows access individual posts","details":"Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugin updates an ephemeral post, allowing an authenticated attacker who can control the ephemeral post update to access individual posts' contents in channels they are not a member of.\n\n","aliases":["BIT-mattermost-2024-1952","CVE-2024-1952","GO-2024-2635"],"modified":"2026-07-17T21:05:03.142150702Z","published":"2024-02-29T12:31:06Z","database_specific":{"cwe_ids":["CWE-200"],"severity":"LOW","github_reviewed":true,"github_reviewed_at":"2024-02-29T22:49:30Z","nvd_published_at":"2024-02-29T11:15:08Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-1952"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-r4fm-g65h-cr54"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost/server/v8","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.0.0"},{"fixed":"9.4.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/02/GHSA-r4fm-g65h-cr54/GHSA-r4fm-g65h-cr54.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}