PT-2026-45981 · Pypi · Matrix Synapse

Published

2026-05-28

·

Updated

2026-05-28

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Synapse is an open source Matrix homeserver implementation. Prior to 1.152.1, local authenticated users can cause Synapse to starve other requests of CPU and lead to other requests failing, causing other users to be denied service. This vulnerability is fixed in 1.152.1.

Fix

Related Identifiers

PYSEC-2026-191

Affected Products

Matrix Synapse