{"schema_version":"1.7.3","id":"GHSA-9p92-x77w-9fw2","published":"2025-09-15T12:31:25Z","modified":"2025-09-17T17:42:10.713067Z","aliases":["CVE-2025-9078","GO-2025-3959"],"summary":"Mattermost makes Use of Weak Hash","details":"Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to properly validate cache keys for link metadata which allows authenticated users to access unauthorized posts and poison link previews via hash collision attacks on FNV-1 hashing.","affected":[{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.8.0"},{"fixed":"10.8.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-9p92-x77w-9fw2/GHSA-9p92-x77w-9fw2.json"}},{"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":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-9p92-x77w-9fw2/GHSA-9p92-x77w-9fw2.json"}},{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"9.11.0"},{"fixed":"9.11.18"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-9p92-x77w-9fw2/GHSA-9p92-x77w-9fw2.json"}},{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.10.0"},{"fixed":"10.10.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-9p92-x77w-9fw2/GHSA-9p92-x77w-9fw2.json"}},{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"10.9.0"},{"fixed":"10.9.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-9p92-x77w-9fw2/GHSA-9p92-x77w-9fw2.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":"8.0.0-20250718075842-cd87e5c87737"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-9p92-x77w-9fw2/GHSA-9p92-x77w-9fw2.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9078"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/356880c8430b77a4a390c89d5a33f6928188d137"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/944ad5cdd9876ef61c78c8275906262a4118755a"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/a8a4badc130be101e5bc4b7916bbcd2f966c4b79"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/cd87e5c877373f109742aa90a3fa136c14774325"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"cwe_ids":["CWE-328"],"github_reviewed":true,"github_reviewed_at":"2025-09-16T19:13:08Z","nvd_published_at":"2025-09-15T10:15:32Z","severity":"MODERATE"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}