{"action":"Upgrade matrix-synapse to 1.94.0 or later.","affected":[{"fixed":"1.94.0","introduced":"0"}],"component":"matrix-synapse","cve_ids":["CVE-2023-45129"],"ecosystem":"PyPI","epss":0.01394,"exploited":false,"fixed_versions":["1.94.0"],"ghsa_id":"GHSA-5chr-wjw5-3gq4","id":"tcs_01M5KGJTVGMPJ3GXV19PWAMBVN","modified_at":"2023-11-08T04:13:36.773420Z","published_at":"2023-10-10T18:15:00Z","references":["https://osv.dev/vulnerability/PYSEC-2023-199","https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#version-2-new-version","https://github.com/matrix-org/synapse/pull/16360","https://github.com/matrix-org/synapse/security/advisories/GHSA-5chr-wjw5-3gq4"],"severity":{"label":"medium","score":4.9},"sources":[{"source":"osv","source_id":"PYSEC-2023-199","url":"https://osv.dev/vulnerability/PYSEC-2023-199"}],"summary":"Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently"}