CVE-2018-12423
HIGH7.5EPSS 0.27%Matrix Synapse Authorization Error
Published: 5/13/2022Modified: 5/20/2026
Description
In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.
Affected packages (2)
- Debian/matrix-synapsefrom 0, < 0.31.2+dfsg-1
- PyPI/matrix-synapsefrom 0, < 0.31.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2018-12423
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2018-12423
- PATCHhttps://github.com/matrix-org/synapse
- WEBhttps://bugs.debian.org/901549
- WEBhttps://github.com/matrix-org/matrix-doc/issues/1304
- WEBhttps://matrix.org/blog/2018/06/14/security-update-synapse-0-31-2