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matrix synapse vulnerabilities and exploits
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NA
CVE-2024-31208
Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances prior to 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption ...
NA
CVE-2023-43796
Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver. System administrators are encouraged to upgrade to Syna...
Matrix Synapse
Fedoraproject Fedora 38
Fedoraproject Fedora 39
NA
CVE-2023-45129
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed fede...
Matrix Synapse
Fedoraproject Fedora 37
Fedoraproject Fedora 38
NA
CVE-2023-41335
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. When users update their passwords, the new credentials may be briefly held in the server database. While this doesn't grant the server any added capabilities—it already lea...
Matrix Synapse
Fedoraproject Fedora 37
Fedoraproject Fedora 38
NA
CVE-2023-42453
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event (if they knew the room ID and event ID). Note that the users were not able to view the events, but simply mark it as read. This co...
Matrix Synapse
Fedoraproject Fedora 37
Fedoraproject Fedora 38
NA
CVE-2023-32682
Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. In affected versions it may be possible for a deactivated user to login when using uncommon configurations. This only applies if any of the following are true: 1. JSON Web Tokens are enabled for...
Matrix Synapse
NA
CVE-2023-32683
Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. A discovered oEmbed or image URL can bypass the `url_preview_url_blacklist` setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addres...
Matrix Synapse
NA
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 receiving some events can validate that those...
Matrix Synapse
NA
CVE-2022-39374
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 curre...
Matrix Synapse
NA
CVE-2023-32323
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with f...
Matrix Synapse
VMScore
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-4761
command injection
CVE-2024-3676
IDOR
CVE-2024-30039
CVE-2024-32113
CVE-2024-30049
CVE-2024-4776
SQL injection
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