CVE-2025-30355 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2025-30355 Interim 1 3 2025-09-22T07:58:13Z current 2025-03-28T00:12:12Z 2025-09-22T07:58:13Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2025-30355 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. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/BMJS2YEFBSOJRCOH6GFYZZHGJUCSI6ZU/ E-Mail link for openSUSE-SU-2025:14939-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Tumbleweed matrix-synapse-1.127.1-1.1 matrix-synapse-1.127.1-1.1 as a component of openSUSE Tumbleweed 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. CVE-2025-30355 openSUSE Tumbleweed:matrix-synapse-1.127.1-1.1 important 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H