Auth bypass in Matrix Synapse
CVE-2022-39335
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix Federation API allows remote homeservers to request the authorization events in a room. This is necessary so that a homeserver rece…
Vulnerability class: Information Disclosure
EPSS: 0.006 (46.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Matrix Synapse
- Matrix-org Synapse — versions < 1.69.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com
Frequently asked questions
- What is CVE-2022-39335?
- CVE-2022-39335 is a medium-severity vulnerability in Matrix Synapse, classified under Information Disclosure. CVSS score: 5.0/10. Published 2023-05-26.
- How severe is CVE-2022-39335?
- Medium severity. CVSS v3 base score is 5.0 out of 10.