Vulnerability · Published Dec 22, 2025 · Assigned by Mattermost
CVE-2025-14273Mattermost Jira plugin user spoofing enables Jira request forgery.
High 7.2
In plain English
A high-severity security flaw in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-plugin-jira | no fix listed | GO-2026-4275 |
| Go | github.com/mattermost/mattermost-plugin-jira | 4.4.1 | GHSA-qvmc-92vg-6r35 |
| Go | github.com/mattermost/mattermost-server | no fix listed | GO-2026-4275 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2026-4275 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2026-4275 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20251121122154-b57c297c6d7a | GHSA-qvmc-92vg-6r35 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20251121122154-b57c297c6d7a | GO-2026-4275 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 11.1.0 – through 11.1.011.0.0 – through 11.0.510.12.0 – through 10.12.310.11.0 – through 10.11.7 |
Weakness: CWE-303 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L