Linux Distros Unpatched Vulnerability : CVE-2025-30355

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Denial-of-Service (DoS)

Synapse is vulnerable to a Denial-Of-Service. The vulnerability is due to improper handling of maliciously crafted federation events, where a malicious Matrix server can send crafted events that prevent Synapse from federating with other servers...

CVE-2025-30355 Synapse vulnerable to federation denial of service via malformed events

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...