by Kastro
Paper/Archive/CVE-2025-24024

CVE-2025-24024

matrix-org mjolnir — Mjolnir v1.9.0 accepts commands from any room

EPSS 0.6%CVSS 9.1
critical.is priorityof 100
37
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 49.7.497 × 209.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
mjolnir= 1.9.0–CNA

Scores by source

GitHub_M (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/matrix-org/mjolnir/security/advisories/GHSA-3jq6-xc85-m394refgithub.com/matrix-org/mjolnir/commit/b437fa16b5425985715df861987c836affd51eearefgithub.com/matrix-org/mjolnir/commit/d0ef527a9e3eb45e17143d5295a64b775ccaa23d