CVE Explorer
CVE-2026-45078
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"synapse","vendor":"element-hq","versions":[{"status":"affected","version":"< 1.152.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:04ae9ec4b4701fa9be3495e8ac3f2c518510c4f2889f1cd3680c5f7791072472 · sha256:b957df473489027e… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":6.8,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:04ae9ec4b4701fa9be3495e8ac3f2c518510c4f2889f1cd3680c5f7791072472 · sha256:b957df473489027e… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:04ae9ec4b4701fa9be3495e8ac3f2c518510c4f2889f1cd3680c5f7791072472 · sha256:b957df473489027e… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/element-hq/synapse/security/advisories/GHSA-8q93-326v-3m7g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/element-hq/synapse/security/advisories/GHSA-8q93-326v-3m7g"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:04ae9ec4b4701fa9be3495e8ac3f2c518510c4f2889f1cd3680c5f7791072472 · sha256:b957df473489027e… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.