6.8Medium
CVE-2026-45078Synapse 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.
Weakness (CWE):
CWE-770
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| element | synapse | < 1.152.1 | |
| element-hq | synapse | < 1.152.1 |
References and patches
- https://github.com/element-hq/synapse/security/advisories/GHSA-8q93-326v-3m7g MitigationVendor Advisory
CPE matches (NVD) (1)
cpe:2.3:a:element:synapse:*:*:*:*:*:*:*:*< 1.152.1