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-2022-39374

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-2022-39335 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

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-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

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 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-2023-32323

CVE-2023-32323 affects the Synapse Matrix homeserver. The issue stems from an unlimited invite_room_state size in versions up to 1.73, enabling a malicious user with state-event permissions to disrupt outbound federation. A fix was introduced in 1.74, which refuses oversized invite_room_state fie...

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-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-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-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-2022-39335

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...

GHSA-45CJ-F97F-GGWV Synapse does not apply enough checks to servers requesting auth events of events in a room

Impact 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 authorisation events of events in a room. This is necessary so that a homeserver receiving some events can validate that those...

Synapse does not apply enough checks to servers requesting auth events of events in a room

Impact 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 authorisation events of events in a room. This is necessary so that a homeserver receiving some events can validate that those...

PT-2023-13722 · Synapse +2 · Synapse +2

Name of the Vulnerable Software and Affected Versions: Synapse versions prior to 1.68.0 Description: The issue occurs when 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...

CVE-2023-2739

A vulnerability classified as problematic was found in Gira HomeServer up to 4.12.0.220829 beta. This vulnerability affects unknown code of the file /hslist. The manipulation of the argument lst with the input debug%27" leads to cross site scripting. The attack can be initiated remotely. The...

Cross site scripting

A vulnerability classified as problematic was found in Gira HomeServer up to 4.12.0.220829 beta. This vulnerability affects unknown code of the file /hslist. The manipulation of the argument lst with the input debug%27" leads to cross site scripting. The attack can be initiated remotely. The...