{"action":"Upgrade matrix-synapse to 1.120.1 or later.","affected":[{"fixed":"1.120.1","introduced":"1.113.0rc1"}],"component":"matrix-synapse","cve_ids":["CVE-2024-53867"],"ecosystem":"PyPI","epss":0.00442,"exploited":false,"fixed_versions":["1.120.1"],"ghsa_id":"GHSA-56w4-5538-8v8h","id":"tcs_01M5KF06T3Y0M18XJKQ55YKHSS","modified_at":"2026-07-07T17:57:08.952627015Z","published_at":"2024-12-03T18:44:23Z","references":["https://osv.dev/vulnerability/GHSA-56w4-5538-8v8h","https://github.com/element-hq/synapse/security/advisories/GHSA-56w4-5538-8v8h","https://nvd.nist.gov/vuln/detail/CVE-2024-53867","https://github.com/matrix-org/matrix-spec-proposals/pull/4186","https://github.com/element-hq/synapse"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-56w4-5538-8v8h","url":"https://osv.dev/vulnerability/GHSA-56w4-5538-8v8h"}],"summary":"Synapse Matrix has a partial room state leak via Sliding Sync"}