Critical severity · published Jan 21, 2025
CVE-2025-24024
Mjolnir v1.9.0 accepts commands from any room
9.1
CVSS
0.6%
EPSS
No
On KEV
Description
Mjolnir is a moderation tool for Matrix. Mjolnir v1.9.0 responds to management commands from any room the bot is member of. This can allow users who aren't operators of the bot to use the bot's functions, including server administration components if enabled. Version 1.9.1 reverts the feature that introduced the bug, and version 1.9.2 reintroduces the feature safely. Downgrading to version 1.8.3 is recommended if upgrading to 1.9.1 or higher isn't possible.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MJ
mjolnir · matrix-org
= 1.9.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-24024
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-24024
github.com
https://github.com/matrix-org/mjolnir/commit/b437fa16b5425985715df861987c836affd51eea
github.com
https://github.com/matrix-org/mjolnir/commit/d0ef527a9e3eb45e17143d5295a64b775ccaa23d
github.com
https://github.com/matrix-org/mjolnir/security/advisories/GHSA-3jq6-xc85-m394