{"id":"CVE-2024-53867","state":"PUBLISHED","title":"Synapse Matrix has a partial room state leak via Sliding Sync","description":"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.","publishedAt":"2024-12-03T16:52:01.596Z","updatedAt":"2024-12-03T19:07:19.919Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["element-hq synapse"],"affected":[{"vendor":"element-hq","product":"synapse","versions":[{"version":">= 1.113.0rc1, < 1.120.1","status":"affected"}]}],"references":["https://github.com/element-hq/synapse/security/advisories/GHSA-56w4-5538-8v8h","https://github.com/matrix-org/matrix-spec-proposals/pull/4186"],"weaknesses":["CWE-497"],"ingestedAt":"2026-10-29T20:08:04.920Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/53xxx/CVE-2024-53867.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-53867","state":"PUBLISHED","datePublished":"2024-12-03T16:52:01.596Z","dateUpdated":"2024-12-03T19:07:19.919Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2024-11-22T17:30:02.145Z"},"containers":{"cna":{"title":"Synapse Matrix has a partial room state leak via Sliding Sync","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"element-hq","product":"synapse","versions":[{"version":">= 1.113.0rc1, < 1.120.1","status":"affected"}]}],"references":[{"url":"https://github.com/element-hq/synapse/security/advisories/GHSA-56w4-5538-8v8h","name":"https://github.com/element-hq/synapse/security/advisories/GHSA-56w4-5538-8v8h","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/matrix-org/matrix-spec-proposals/pull/4186","name":"https://github.com/matrix-org/matrix-spec-proposals/pull/4186","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-497","lang":"en","description":"CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2024-12-03T16:52:01.596Z"},"source":{"advisory":"GHSA-56w4-5538-8v8h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-12-03T19:07:06.315341Z","id":"CVE-2024-53867","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-12-03T19:07:19.919Z"}}]}}}