https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 08 Oct 2026 22:15:50 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-217390 EUVD-2026-217390 https://cve.radiocsirt.org/vuln/euvd-2026-217390 https://cve.radiocsirt.org/vuln/fkie_cve-2024-31208 <p>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 excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.</p> <p>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 excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2024-31208 https://cve.radiocsirt.org/vuln/ghsa-3h7q-rfh9-xm4v <p><strong>Affected:</strong> PyPI: matrix-synapse</p> <p>### Impact</p> <p>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 how the auth chain cover index is calculated. This can induce high CPU consumption and accumulate excessive data in the database of such instances, resulting in a denial of service.</p> <p>Servers in private federations, or those that do not federate, are not affected.</p> <p>### Patches</p> <p>Server administrators should upgrade to 1.105.1 or later.</p> <p>### Workarounds</p> <p>One can: - ban the malicious users or ACL block servers from the rooms; and/or - leave the room and purge the room using the admin API</p> <p>### For more information</p> <p>If you have any questions or comments about this advisory, please email us at [security AT element.io](mailto:security@element.io).</p> <p><strong>Affected:</strong> PyPI: matrix-synapse</p> <p>### Impact</p> <p>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 how the auth chain cover index is calculated. This can induce high CPU consumption and accumulate excessive data in the database of such instances, resulting in a denial of service.</p> <p>Servers in private federations, or those that do not federate, are not affected.</p> <p>### Patches</p> <p>Server administrators should upgrade to 1.105.1 or later.</p> <p>### Workarounds</p> <p>One can: - ban the malicious users or ACL block servers from the rooms; and/or - leave the room and purge the room using the admin API</p> <p>### For more information</p> <p>If you have any questions or comments about this advisory, please email us at [security AT element.io](mailto:security@element.io).</p> https://cve.radiocsirt.org/vuln/ghsa-3h7q-rfh9-xm4v https://cve.radiocsirt.org/vuln/gsd-2024-31208 gsd-2024-31208 https://cve.radiocsirt.org/vuln/gsd-2024-31208 https://cve.radiocsirt.org/vuln/opensuse-su-2024:13897-1 <p>matrix-synapse-1.105.1-1.1 on GA media</p> <p>matrix-synapse-1.105.1-1.1 on GA media</p> https://cve.radiocsirt.org/vuln/opensuse-su-2024:13897-1 https://cve.radiocsirt.org/vuln/pysec-2024-50 <p><strong>Affected:</strong> PyPI: matrix-synapse</p> <p>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 excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.</p> <p><strong>Affected:</strong> PyPI: matrix-synapse</p> <p>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 excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.</p> https://cve.radiocsirt.org/vuln/pysec-2024-50 https://cve.radiocsirt.org/vuln/ubuntu-cve-2024-31208 <p><strong>Affected:</strong> Ubuntu:16.04:LTS: synapse, Ubuntu:Pro:18.04:LTS: matrix-synapse, Ubuntu:18.04:LTS: synapse, Ubuntu:Pro:20.04:LTS: matrix-synapse, Ubuntu:20.04:LTS: synapse, Ubuntu:22.04:LTS: synapse, Ubuntu:Pro:22.04:LTS: matrix-synapse, Ubuntu:24.04:LTS: matrix-synapse, Ubuntu:24.04:LTS: synapse, Ubuntu:25.10: synapse and 1 more</p> <p>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 excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.</p> <p><strong>Affected:</strong> Ubuntu:16.04:LTS: synapse, Ubuntu:Pro:18.04:LTS: matrix-synapse, Ubuntu:18.04:LTS: synapse, Ubuntu:Pro:20.04:LTS: matrix-synapse, Ubuntu:20.04:LTS: synapse, Ubuntu:22.04:LTS: synapse, Ubuntu:Pro:22.04:LTS: matrix-synapse, Ubuntu:24.04:LTS: matrix-synapse, Ubuntu:24.04:LTS: synapse, Ubuntu:25.10: synapse and 1 more</p> <p>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 excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. Some workarounds are available. One can ban the malicious users or ACL block servers from the rooms and/or leave the room and purge the room using the admin API.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2024-31208