Description
In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_misc
https://matrix.org/blog/2018/06/14/security-update-synapse-0-31-2/
Third Party Advisory x_refsource_misc
https://github.com/matrix-org/matrix-doc/issues/1304
Mailing List, Third Party Advisory x_refsource_misc
https://bugs.debian.org/901549
Scores
CVSS v3
7.5
EPSS
0.0182
EPSS Percentile
76.5%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
Status
published
Products (2)
matrix/synapse
< 0.31.2
pypi/matrix-synapse
0 - 0.31.2PyPI
Published
Jun 14, 2018
Tracked Since
Feb 18, 2026