Application-Level DoS Vulnerability in Mattermost by Mattermost Inc.
CVE-2025-14435

6.8MEDIUM

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
16 January 2026

What is CVE-2025-14435?

Mattermost versions 10.11.x through 10.11.8, 11.1.x through 11.1.1, and 11.0.x through 11.0.6 are susceptible to an application-level denial of service (DoS) vulnerability. This occurs due to the failure to prevent infinite re-renders in response to API errors. Authenticated users can exploit this flaw to trigger unbounded component re-render loops, potentially degrading application performance and user experience. It is crucial for organizations using affected Mattermost versions to implement timely patches and updates to mitigate the risks associated with this vulnerability.

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Affected Version(s)

Mattermost 10.11.0 <= 10.11.8

Mattermost 11.1.0 <= 11.1.1

Mattermost 11.0.0 <= 11.0.6

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

daw10
JSON
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