---
id: CVE-2025-14273
title: >-
  Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3,
  10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin
  versions <=4.4.0 fail to enforce authentication and issue-key path
  restrictions in the…
summary: >-
  Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3,
  10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin
  versions <=4.4.0 fail to enforce authentication and issue-key path
  restrictions in the…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L'
cwe:
  - CWE-303
vendor: mattermost
product: mattermost_server
affected:
  - 'mattermost_server >= 10.11.0, < 10.11.8'
  - 'mattermost_server >= 10.12.0, < 10.12.4'
  - 'mattermost_server >= 11.0.0, < 11.0.6'
  - 'mattermost_server >= 11.1.0, < 11.1.1'
patched:
  - mattermost_server 11.1.1
published: '2025-12-22'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T19:10:00.297'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-14273'
references:
  - url: 'https://mattermost.com/security-updates'
    label: responsibledisclosure@mattermost.com
tags:
  - nvd
epss: 0.00263
epssPercentile: 0.16897
ingestedAt: '2026-10-14T19:49:57.535Z'
---

## Overview

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin versions <=4.4.0 fail to enforce authentication and issue-key path restrictions in the Jira plugin, which allows an unauthenticated attacker who knows a valid user ID to issue authenticated GET and POST requests to the Jira server via crafted plugin payloads that spoof the user ID and inject arbitrary issue key paths. Mattermost Advisory ID: MMSA-2025-00555

## Affected

- `mattermost_server >= 10.11.0, < 10.11.8`
- `mattermost_server >= 10.12.0, < 10.12.4`
- `mattermost_server >= 11.0.0, < 11.0.6`
- `mattermost_server >= 11.1.0, < 11.1.1`

## Remediation

Upgrade past the affected range:

- `mattermost_server 11.1.1`