{"id":"CVE-2025-49090","aliases":["ALPINE-CVE-2025-49090","EUVD-2025-32573","GHSA-jhc3-vch4-27rh","openSUSE-SU-2025:15436-1"],"status":"published","title":"The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution...","description":"The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00473,"percentile":0.412,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-642"],"published":"2025-08-13T00:00:00Z","modified":"2026-11-03T06:32:51Z","fixes":[{"ecosystem":"Alpine:v3.22","package":"synapse","fixed_in":["1.135.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"synapse","fixed_in":["1.135.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"synapse","fixed_in":["1.135.1-r0"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"matrix-synapse","fixed_in":["1.136.0-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.22","package":"synapse","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.135.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"synapse","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.135.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"synapse","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.135.1-r0"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"matrix-synapse","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.136.0-1.1"}]}]}],"products":[{"vendor":"matrix","product":"matrix specification"}],"references":[{"url":"https://matrix.org/blog/2025/08/security-release/","tags":["article"]},{"url":"https://github.com/Nheko-Reborn/nheko/issues/1931","tags":["report"]},{"url":"https://github.com/matrix-org/matrix-spec/releases/tag/v1.16","tags":["web"]},{"url":"https://matrix.org/blog/2025/08/project-hydra-improving-state-res/","tags":["article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49090","tags":["advisory"]},{"url":"https://matrix.org/blog/2025/08/project-hydra-improving-state-res"},{"url":"https://matrix.org/blog/2025/08/security-release"},{"url":"https://github.com/advisories/GHSA-jhc3-vch4-27rh"},{"url":"https://security.alpinelinux.org/vuln/CVE-2025-49090","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49090.json","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-49090","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-49090","description":"The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.","status":"published","published":"2025-10-02T00:00:00Z","modified":"2025-10-02T19:35:08.439Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-642"],"updated_at":"2026-11-02T14:32:24.825718Z"}],"euvd":[{"id":"EUVD-2025-32573","description":"The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.","status":"published","published":"2025-10-02T00:00:00Z","modified":"2025-10-02T19:35:08Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T20:31:36.727084Z"}],"ghsa":[{"id":"GHSA-jhc3-vch4-27rh","title":"The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution...","description":"The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.","status":"published","published":"2025-10-02T21:31:19Z","modified":"2025-10-02T21:31:24Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L","level":"high"}],"cwes":["CWE-642"],"updated_at":"2026-11-02T15:03:50.770325Z"}],"nvd":[{"id":"CVE-2025-49090","description":"The Matrix specification before 1.16 (i.e., with a room version before 12 and State Resolution before 2.1) has deficient state resolution.","status":"published","published":"2025-10-02T19:15:31.29Z","modified":"2026-10-12T15:10:00.207Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-642"],"updated_at":"2026-11-02T14:11:34.090044Z"}],"osv":[{"id":"ALPINE-CVE-2025-49090","description":"The Matrix specification before 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media of openSUSE Tumbleweed.","status":"published","published":"2025-08-13T00:00:00Z","modified":"2026-03-23T04:53:47.304148Z","updated_at":"2026-11-02T16:58:37.810934Z"}]}}