Security Advisory

CVE-2026-45076

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-28 15:50:25

Last updated 2026-06-02 14:51:34

Assigner GitHub_M

CVSS score 5.1

State PUBLISHED

Description

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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