What is CVE-2025-14435?

CVE-2025-14435 is a medium-severity vulnerability in Mattermost, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.8/10. Published 2026-01-16.

How severe is CVE-2025-14435?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Resource exhaustion in Mattermost

CVE-2025-14435

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.

EPSS: 0.003 (19.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H.

Affected products

Mattermost — versions 10.11.0, 11.1.0, 11.0.0
Mattermost Mattermost_server

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-14435?: CVE-2025-14435 is a medium-severity vulnerability in Mattermost, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.8/10. Published 2026-01-16.
How severe is CVE-2025-14435?: Medium severity. CVSS v3 base score is 6.8 out of 10.