matrix-synapse: Synapse is an open source Matrix homeserver implementation
CVE-2026-45076 is fixed in matrix-synapse on 1 platform by DEBIAN-CVE-2026-45076 (version 1.152.1-1), released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, in federated rooms, malicious homeservers can craft room events in such a way that prevents Synapse from providing full history to paginating clients. Clients could therefore fail to display room history. This vulnerability is fixed in 1.152.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| matrix-synapse · Debian 14 | 1.152.1-1 | DEBIAN-CVE-2026-45076 | Jun 24, 2026 |
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