9.1

CVE-2025-24024: matrix-org mjolnir

CVSS: 9.1v3.1CriticalDeferred
Published 21-01-2025Last modified 21-01-2025
Open JSON

Vulnerability summary

CVE-2025-24024 is a critical (CVSS 9.1) vulnerability in matrix-org mjolnir. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.60%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 21-01-2025
    PublishedVulnerability first disclosed.
  2. 21-01-2025
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

0.00 pp

From 0.60% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.60%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Matrix-org1 product

1 vendor · 1 product

References

3 links