PT-2026-41158 · Synapse · Synapse

CVE-2026-45076

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Published

2026-05-14

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Updated

2026-06-04

CVSS v4.0

6.9

Medium

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Name of the Vulnerable Software and Affected Versions Synapse versions prior to 1.152.1
Description In federated rooms, malicious homeservers can craft room events that prevent the server from providing full history to paginating clients. This can result in clients failing to display the room history.
Recommendations Update to version 1.152.1 or later.

Exploit

Fix

RCE

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Weakness Enumeration

Related Identifiers

CVE-2026-45076
GHSA-6QF2-7X63-MM6V
OPENSUSE-SU-2026:10898-1
PYSEC-2026-194

Affected Products

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