VULNERABILITY INTELLIGENCE
CVE-2022-39374
CVSS score6.5 MEDIUM
EPSS probability0.94%
CISA KEVNot currently listed
Published2023-05-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0
Weakness classification
- security-advisories@github.com: CWE-400
- nvd@nist.gov: CWE-400
Primary references
- security-advisories@github.com — Issue Tracking, Patch
- security-advisories@github.com — Mitigation, Vendor Advisory
- security-advisories@github.com
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch
- af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108