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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-31152 Detail

Description

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.2/rooms/v9/#authorization-rules) which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. Federation can be disabled by setting [`federation_domain_whitelist`](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#federation_domain_whitelist) to an empty list (`[]`) as a workaround.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/matrix-org/synapse/pull/13087 CVE, GitHub, Inc. Issue Tracking  Patch  Third Party Advisory 
https://github.com/matrix-org/synapse/pull/13088 CVE, GitHub, Inc. Issue Tracking  Patch  Third Party Advisory 
https://github.com/matrix-org/synapse/releases/tag/v1.62.0 CVE, GitHub, Inc. Release Notes  Third Party Advisory 
https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765 CVE, GitHub, Inc. Issue Tracking  Mitigation  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-755 Improper Handling of Exceptional Conditions cwe source acceptance level NIST  
CWE-703 Improper Check or Handling of Exceptional Conditions GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-31152
NVD Published Date:
09/02/2022
NVD Last Modified:
06/17/2026
Source:
GitHub, Inc.