CVE-2024-31208

CVE-2024-31208 affects Synapse (Matrix homeserver) before 1.105.1. A remote matrix user sharing a room with such servers can dispatch crafted events to exploit the V2 state resolution algorithm, causing high CPU usage and database bloat leading to a denial of service. Impact is limited to servers...

CVE-2024-31208 Synapse's V2 state resolution weakness allows DoS from remote room members

Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption and accumulate...

CVE-2024-31208

Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption and accumulate...

SUSE 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 Synapse 1.95.1 or...

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 Synapse 1.95.1 or...

PYSEC-2023-230

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 Synapse 1.95.1 or...

CVE-2023-43796

The CVE-2023-43796 vulnerability affects Synapse (Matrix homeserver). Before versions 1.95.1 and 1.96.0rc1, cached device information of remote users could be queried, enabling enumeration of users known to a homeserver. The issue is mitigated by upgrading to Synapse 1.95.1 or 1.96.0rc1. As a wor...

CVE-2023-43796 Synapse vulnerable to leak of remote user device information

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 Synapse 1.95.1 or...

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 Synapse 1.95.1 or...

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 federation which...

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 federation which...

DEBIAN-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 federation which...

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 federation which...

Design/Logic Flaw

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 federation which...

CVE-2023-45129

CVE-2023-45129 affects Synapse (Matrix homeserver). Before version 1.94.0, a malicious server ACL event can cause a (persistent) denial of service, impacting performance and reliability. Closed federation deployments are not affected. Mitigation: upgrade to Synapse 1.94.0 or later. As a workaroun...

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 federation which...

SUSE 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 could be confusing as...

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 could be confusing as...

DEBIAN-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 could be confusing as...

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 learns the users' passwords as...