6.5

CVE-2025-21083: mattermost

CVSS: 6.5v3.1MediumAnalyzed
Published 15-01-2025Last modified 15-01-2025
Open JSON

Vulnerability summary

CVE-2025-21083 is a medium (CVSS 6.5) vulnerability in mattermost. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43.1% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.52%
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. 15-01-2025
    PublishedVulnerability first disclosed.
  2. 15-01-2025
    Last modifiedVulnerability information updated.

Description

Mattermost Mobile Apps versions <=2.22.0 fail to properly validate post props which allows a malicious authenticated user to cause a crash via a malicious post.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

0.00 pp

From 0.52% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.52%

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

Mattermost2 products

1 vendor · 2 products

References

1 links