{"schemaVersion":3,"id":"CVE-2022-39335","aliases":["GHSA-45cj-f97f-ggwv","PYSEC-2023-65","UBUNTU-CVE-2022-39335","DEBIAN-CVE-2022-39335"],"status":"published","duplicateOf":null,"title":null,"description":"Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix Federation API allows remote homeservers to request the authorization events in a room. This is necessary so that a homeserver receiving some events can validate that those events are legitimate and permitted in their room. However, in versions of Synapse up to and including 1.68.0, a Synapse homeserver answering a query for authorization events does not sufficiently check that the requesting server should be able to access them. The issue was patched in Synapse 1.69.0. 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