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matrix synapse vulnerabilities and exploits
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7.5
CVSSv3
CVE-2018-12423
In Synapse prior to 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.
Matrix Synapse
7.5
CVSSv3
CVE-2018-12291
The on_get_missing_events function in handlers/federation.py in Matrix Synapse prior to 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly.
Matrix Synapse
7.5
CVSSv3
CVE-2018-10657
Matrix Synapse prior to 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018.
Matrix Synapse
5.3
CVSSv3
CVE-2021-29471
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 "Push rules" can specify conditions under which they will match, including `e...
Matrix Synapse
Fedoraproject Fedora 34
6.5
CVSSv3
CVE-2021-21274
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, a malicious homeserver could redirect requests to their .well-known file to a large fi...
Matrix Synapse
Fedoraproject Fedora 34
6.1
CVSSv3
CVE-2021-21273
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, requests to user provided domains were not restricted to external IP addresses when ca...
Matrix Synapse
Fedoraproject Fedora 34
8.2
CVSSv3
CVE-2021-21332
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting ...
Matrix Synapse
Fedoraproject Fedora 34
6.1
CVSSv3
CVE-2021-21333
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the notification emails sent for notifications for missed messages or for an expiring ...
Matrix Synapse
Fedoraproject Fedora 34
6.3
CVSSv3
CVE-2021-21392
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 requests to user provided domains were not restricted to external IP addresses when tra...
Matrix Synapse
Fedoraproject Fedora 34
6.5
CVSSv3
CVE-2021-21393
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm...
Matrix Synapse
Fedoraproject Fedora 34
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-36954
CVE-2024-36933
CVE-2024-24919
CVE-2024-36923
CVE-2024-2961
CVE-2024-36925
bypass
encryption
command injection
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