{"action":"Upgrade matrix-synapse to 1.47.1 or later.","affected":[{"fixed":"1.47.1","introduced":"0"}],"component":"matrix-synapse","cve_ids":["CVE-2021-41281"],"ecosystem":"PyPI","epss":0.01577,"exploited":false,"fixed_versions":["1.47.1"],"ghsa_id":"GHSA-3hfw-x7gx-437c","id":"tcs_01M5KEVWS4H9XXYM40D5EBRCBP","modified_at":"2026-07-08T06:28:00.355576319Z","published_at":"2021-11-23T21:58:56Z","references":["https://osv.dev/vulnerability/GHSA-3hfw-x7gx-437c","https://github.com/matrix-org/synapse/security/advisories/GHSA-3hfw-x7gx-437c","https://nvd.nist.gov/vuln/detail/CVE-2021-41281","https://github.com/matrix-org/synapse/commit/91f2bd090","https://github.com/matrix-org/synapse","https://github.com/matrix-org/synapse/releases/tag/v1.47.1","https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2021-436.yaml","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EU7QRE55U4IUEDLKT5IYPWL3UXMELFAS","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N3WY56LCEZ4ZECLWV5KMAXF2PSMUB4F2"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-3hfw-x7gx-437c","url":"https://osv.dev/vulnerability/GHSA-3hfw-x7gx-437c"}],"summary":"Path traversal in Matrix Synapse"}