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CVE PROGRAM SOURCE RECORD6.8 Medium

CVE-2026-45078

Synapse CPU starvation (Denial of Service)

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

element-hq synapse

  • < 1.152.1affected

References