Medium severity6.5NVD Advisory· Published May 26, 2023· Updated Jun 17, 2026
CVE-2022-39374
CVE-2022-39374
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
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
matrix-synapsePyPI | >= 1.62.0, < 1.68.0rc1 | 1.68.0rc1 |
Affected products
3cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*range: >=1.62.0,<1.68.0
- (no CPE)range: >= 1.62.0, < 1.68.0
Patches
Vulnerability mechanics
References
8- github.com/matrix-org/synapse/pull/13723nvdIssue TrackingPatchWEB
- github.com/advisories/GHSA-p9qp-c452-f9r7ghsaADVISORY
- github.com/matrix-org/synapse/security/advisories/GHSA-p9qp-c452-f9r7nvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2022-39374ghsaADVISORY
- github.com/matrix-org/synapse/commit/b73cbb82157d9666e8d667733afebc0d09ed858cghsaWEB
- github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-66.yamlghsaWEB
- lists.fedoraproject.org/archives/list/[email protected]/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QDghsaWEB
- lists.fedoraproject.org/archives/list/[email protected]/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/nvd
News mentions
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