VULNERABILITY INTELLIGENCE

CVE-2026-45078

CVSS score5.5 MEDIUM
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-05-28
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-770

Primary references