{"id":"UBUNTU-CVE-2024-53867","details":"Synapse is an open-source Matrix homeserver. The Sliding Sync feature on Synapse versions between 1.113.0rc1 and 1.120.0 can leak partial room state changes to users no longer in a room. Non-state events, like messages, are unaffected. This vulnerability is fixed in 1.120.1.","modified":"2025-07-16T07:21:12.057031Z","published":"2024-12-03T17:15:00Z","withdrawn":"2025-07-18T17:01:47Z","upstream":["CVE-2024-53867"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-53867"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2024-53867"},{"type":"REPORT","url":"https://github.com/element-hq/synapse/security/advisories/GHSA-56w4-5538-8v8h"},{"type":"REPORT","url":"https://github.com/matrix-org/matrix-spec-proposals/pull/4186"}],"affected":[{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@0.24.0+dfsg-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.24.0+dfsg-1ubuntu0.1~esm1"}]}],"versions":["0.19.2+dfsg-6","0.24.0+dfsg-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"0.24.0+dfsg-1ubuntu0.1~esm1","binary_name":"matrix-synapse"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-53867.json"}},{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@1.11.0-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.0-1"}]}],"versions":["1.3.0-1","1.4.0-1","1.5.0-1","1.5.1-1","1.6.0-1","1.6.1-1","1.7.0-2","1.7.1-1","1.7.2-1","1.7.3-1","1.8.0-1","1.9.0-1","1.9.1-1","1.10.0-1","1.10.0-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"matrix-synapse","binary_version":"1.11.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-53867.json"}},{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@1.53.0-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.53.0-1"}]}],"versions":["1.39.0-1","1.47.0-2","1.47.1-1","1.48.0-1","1.49.0-1","1.49.2-1","1.50.1-1","1.50.2-1","1.51.0-1","1.52.0-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"matrix-synapse","binary_version":"1.53.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-53867.json"}},{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@1.100.0-1ubuntu1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.100.0-1ubuntu1"}]}],"versions":["1.90.0-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"matrix-synapse","binary_version":"1.100.0-1ubuntu1"},{"binary_name":"matrix-synapse-dbgsym","binary_version":"1.100.0-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-53867.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}