CVE-2026-45076

LowCVSS 2.7/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 2.7/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-20

Affected software

No affected versions have been published.

Timeline

Published: May 28, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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