https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-03T09:37:29.924579+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-225567 EUVD-2026-225567 2026-10-03T09:37:30.008226+00:00 EUVD-2026-225567 https://cve.radiocsirt.org/vuln/fkie_cve-2025-30355 fkie_cve-2025-30355 2026-10-03T09:37:30.008261+00:00

Synapse is an open source Matrix homeserver implementation. A malicious server can craft events which, when received, prevent Synapse version up to 1.127.0 from federating with other servers. The vulnerability has been exploited in the wild and has been fixed in Synapse v1.127.1. No known workarounds are available.

 https://cve.radiocsirt.org/vuln/ghsa-v56r-hwv5-mxg6 GHSA-v56r-hwv5-mxg6 — Synapse vulnerable to federation denial of service via malformed events 2026-10-03T09:37:30.008293+00:00

Affected: PyPI: matrix-synapse

### Impact A malicious server can craft events with a `depth` outside the integer range allowed by Canonical JSON. When such an event is received by Synapse version up to 1.127.0, it prevents it from federating with other servers. The vulnerability has been exploited in the wild.

### Patches Fixed in Synapse v1.127.1.

### Workarounds Closed federation environments of trusted servers or non-federating installations are not affected.

### For more information

If you have any questions or comments about this advisory, please email us at [security at element.io](mailto:security@element.io).

 https://cve.radiocsirt.org/vuln/opensuse-su-2025:14939-1 openSUSE-SU-2025:14939-1 — matrix-synapse-1.127.1-1.1 on GA media 2026-10-03T09:37:30.008324+00:00

matrix-synapse-1.127.1-1.1 on GA media

 https://cve.radiocsirt.org/vuln/pysec-2026-1614 PYSEC-2026-1614 — Synapse vulnerable to federation denial of service via malformed events 2026-10-03T09:37:30.008343+00:00

Affected: PyPI: matrix-synapse

### Impact A malicious server can craft events with a `depth` outside the integer range allowed by Canonical JSON. When such an event is received by Synapse version up to 1.127.0, it prevents it from federating with other servers. The vulnerability has been exploited in the wild.

### Patches Fixed in Synapse v1.127.1.

### Workarounds Closed federation environments of trusted servers or non-federating installations are not affected.

### For more information

If you have any questions or comments about this advisory, please email us at [security at element.io](mailto:security@element.io).

 https://cve.radiocsirt.org/vuln/ubuntu-cve-2025-30355 UBUNTU-CVE-2025-30355 2026-10-03T09:37:30.008368+00:00

Affected: Ubuntu:Pro:18.04:LTS: matrix-synapse, Ubuntu:Pro:20.04:LTS: matrix-synapse, Ubuntu:Pro:22.04:LTS: matrix-synapse, Ubuntu:24.04:LTS: matrix-synapse

Synapse is an open source Matrix homeserver implementation. A malicious server can craft events which, when received, prevent Synapse version up to 1.127.0 from federating with other servers. The vulnerability has been exploited in the wild and has been fixed in Synapse v1.127.1. No known workarounds are available.