PYSEC-2026-844 Matrix Synapse Authorization Error

In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.powerlevels event in force...

DEBIAN-CVE-2018-12423

In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.powerlevels event in force...

CVE-2018-12423

In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.powerlevels event in force...

CVE-2018-12423

In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.powerlevels event in force...

Synapse Hijacking Vulnerability

Matrix is a set of open communication networks of which Synapse is a server implementation. There is a security vulnerability in Synapse. An attacker can exploit the vulnerability to hijack 'rooms' message channels...