Bug 2482765 (CVE-2026-45076) - CVE-2026-45076 Synapse: Synapse pagination denial of service
Summary: CVE-2026-45076 Synapse: Synapse pagination denial of service
Keywords:
Status: NEW
Alias: CVE-2026-45076
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2486332 2486333
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-28 17:01 UTC by OSIDB Bzimport
Modified: 2026-06-08 13:24 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-05-28 17:01:38 UTC 
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.
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