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 current state of that...

CVE-2022-39374 Synapse Denial of service due to incorrect application of event authorization rules during state resolution

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...

CVE-2022-39335 Synapse does not apply enough checks to servers requesting auth events of events in a room

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 events are...

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 events are...

CVE-2022-39335

CVE-2022-39335 affects Synapse (Matrix homeserver). The issue: when a home server answers a query for authorization events via the Federation API, it does not sufficiently verify that the requesting server should access those events. This could enable access to authorization events in a room by u...

CVE-2023-32323 Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites

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 federation disable...

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 federation disable...

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 federation disable...

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 current state of that...

CVE-2022-39200

Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the /getmissingevents path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this...

Design/Logic Flaw

Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the /getmissingevents path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this...

CVE-2022-39200 Signature checks not applied to some retrieved missing events

Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the /getmissingevents path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this...

CVE-2022-31152

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 which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including...

CVE-2022-31152

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 which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including...

Authorization

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 which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including...

CVE-2022-31152 Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules

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 which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including...

CVE-2022-31152 Synapse vulnerable to denial of service (DoS) due to incorrect application of event authorization rules

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 which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including...

CVE-2021-40824

A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 aka Matrix SDK for Android before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were...

CVE-2021-40824

A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 aka Matrix SDK for Android before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were...

Code injection

A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 aka Matrix SDK for Android before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were...