6.8

CVE-2025-14435: mattermost

CVSS: 6.8v3.1MediumAnalyzed
AliasesGHSA-mx8m-v8qm-xwr8GO-2026-4326
Published 16-01-2026Last modified 16-01-2026
Open JSON

Vulnerability summary

CVE-2025-14435 is a medium (CVSS 6.8) vulnerability in mattermost. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.3% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:0757-1

Timeline

  1. 16-01-2026
    PublishedVulnerability first disclosed.
  2. 16-01-2026
    Last modifiedVulnerability information updated.

Description

Mattermost versions 10.11.x <= 10.11.8, 11.1.x <= 11.1.1, 11.0.x <= 11.0.6 fail to prevent infinite re-renders on API errors which allows authenticated users to cause application-level DoS via triggering unbounded component re-render loops.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

0.00 pp

From 0.31% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.31%

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
  • mattermost≥ 10.11.0, ≤ 10.11.8 | ≥ 11.1.0, ≤ 11.1.1 | ≥ 11.0.0, ≤ 11.0.6
  • mattermost_server≥ 10.11.0, < 10.11.9 | ≥ 11.0.0, < 11.0.7 | ≥ 11.1.0, < 11.1.2
Github.com/mattermost1 product
  • mattermost-server≥ 10.11.0, < 10.11.9 | ≥ 11.1.0, < 11.1.2 | ≥ 11.0.0, < 11.0.7 | ≥ 11.1.0+incompatible, < 11.1.2+incompatible

2 vendors · 3 products

References

8 links