Latest matrix synapse Vulnerabilities

Synapse vulnerable to leak of remote user device information
pip/matrix-synapse<1.95.1
Matrix Synapse<1.95.1
Fedoraproject Fedora=38
Fedoraproject Fedora=39
<1.95.1
=38
and 1 more
matrix-synapse vulnerable to denial of service due to malicious server ACL events
pip/matrix-synapse<1.94.0
Matrix Synapse<1.94.0
Fedoraproject Fedora=37
Fedoraproject Fedora=38
<1.94.0
=37
and 1 more
Improper validation of receipts allows forged read receipts in matrix synapse
pip/matrix-synapse>=0.34.0<1.93.0
>=1.34.0<1.93.0
=37
=38
Matrix Synapse>=1.34.0<1.93.0
Fedoraproject Fedora=37
and 1 more
Temporary storage of plaintext passwords during password changes in matrix synapse
pip/matrix-synapse>=1.66.0<1.93.0
>=1.66.0<1.93.0
=37
=38
Matrix Synapse>=1.66.0<1.93.0
Fedoraproject Fedora=37
and 1 more
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 si...
Matrix Synapse<1.85.0
pip/matrix-synapse<1.85.0
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 o...
Matrix Synapse<1.85.0
pip/matrix-synapse<1.85.0
### Impact 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 feder...
Matrix Synapse<1.74.0
pip/matrix-synapse<1.74.0
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 tr...
Matrix Synapse>=1.62.0<1.68.0
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...
Matrix Synapse<1.69.0
Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated ...
Matrix Synapse<1.53.0
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/r...
Matrix Synapse<1.62.0
Synapse is an open source home server implementation for the Matrix chat network. In versions prior to 1.61.1 URL previews of some web pages can exhaust the available stack space for the Synapse proce...
Matrix Synapse<1.61.1
Fedoraproject Fedora=35
Fedoraproject Fedora=36
Synapse is a package for Matrix homeservers written in Python 3/Twisted. Prior to version 1.47.1, Synapse instances with the media repository enabled can be tricked into downloading a file from a remo...
Matrix Synapse<1.47.1
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the membership (list of members, with their display names) of...
Matrix Synapse<1.41.1
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the name, avatar, topic and number of members of a room if th...
Matrix Synapse<1.41.1
Fedoraproject Fedora=34
Fedoraproject Fedora=35
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 r...
Matrix Synapse<1.33.2
Fedoraproject Fedora=34
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 request...
Matrix Synapse<1.28.0
Fedoraproject Fedora=34
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...
Matrix Synapse>0.24.0<1.28.0
Fedoraproject Fedora=34
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...
Matrix Synapse>0.17.0<1.28.0
Fedoraproject Fedora=34
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 no...
Matrix Synapse<1.27.0
Fedoraproject Fedora=34
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 pa...
Matrix Synapse<1.27.0
Fedoraproject Fedora=34
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 mali...
Matrix Synapse>=0.99.0<1.25.0
Fedoraproject Fedora=34
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, reques...
Matrix Synapse<1.25.0
Fedoraproject Fedora=34
Matrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference "homeserver" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed ev...
Matrix Synapse<1.23.1
Fedoraproject Fedora=32
Fedoraproject Fedora=33
Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote attackers to execute a denial of service attac...
Matrix Synapse<1.20.0
Fedoraproject Fedora=32
Fedoraproject Fedora=33
AuthRestServlet in Matrix Synapse before 1.21.0 is vulnerable to XSS due to unsafe interpolation of the session GET parameter. This allows a remote attacker to execute an XSS attack on the domain Syna...
Matrix Synapse<1.21.0
Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over `/send_join`, `/send_leave`, and `/invite` may not be correctly signed, or may not come from the exp...
pip/matrix-synapse<1.5.0
Matrix Synapse<1.5.0
An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token ...
Matrix Sydent<1.0.3
Matrix Synapse<0.99.3.1
Matrix Synapse before 0.34.0.1, when the `macaroon_secret_key` authentication parameter is not set, uses a predictable value to derive a secret key and other secrets which could allow remote attackers...
pip/matrix-synapse<0.34.0.1
Matrix Synapse<0.34.0.1
Fedoraproject Fedora=28
Fedoraproject Fedora=29
Matrix Synapse before 0.33.3.1 and 0.33.2.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation.
pip/matrix-synapse<0.33.2.1
pip/matrix-synapse>=0.33.3<0.33.3.1
Matrix Synapse<0.33.3.1
Debian Debian Linux=8.0
In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no `m.room.power_levels` event in force.
Matrix Synapse<0.31.2
The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied c...
Matrix Synapse<0.31.1

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