Mattermost Jira plugin user spoofing enables Jira request forgery.
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
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 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
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Mattermost | Mattermost | 11.1.0 – 11.1.0; 11.0.0 – 11.0.5; 10.12.0 – 10.12.3; 10.11.0 – 10.11.7 | 11.2.0, 11.1.1, 11.0.6, 10.12.4, 10.11.8 | Patch available | CNA |
| — | github.com/mattermost/mattermost/server/v8 (Go) | before 8.0.0-20251121122154-b57c297c6d7a | 8.0.0-20251121122154-b57c297c6d7a | Patch available | GHSA-qvmc-92vg-6r35 |
| — | github.com/mattermost/mattermost-plugin-jira (Go) | before 4.4.1 | 4.4.1 | Patch available | GHSA-qvmc-92vg-6r35 |
- Mattermost VendorMattermost Affected 11.1.0 – 11.1.0; 11.0.0 – 11.0.5; 10.12.0 – 10.12.3; 10.11.0 – 10.11.7 Fixed in 11.2.0, 11.1.1, 11.0.6, 10.12.4, 10.11.8 Patch available CNA
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected before 8.0.0-20251121122154-b57c297c6d7a Fixed in 8.0.0-20251121122154-b57c297c6d7a Patch available GHSA-qvmc-92vg-6r35
- github.com/mattermost/mattermost-plugin-jira (Go) Vendor— Affected before 4.4.1 Fixed in 4.4.1 Patch available GHSA-qvmc-92vg-6r35
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | 10.11.0 to before 10.11.8; 10.12.0 to before 10.12.4; 11.0.0 to before 11.0.6; 11.1.0 to before 11.1.1 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions 10.11.0 to before 10.11.8; 10.12.0 to before 10.12.4; 11.0.0 to before 11.0.6; 11.1.0 to before 11.1.1 Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 11.2.0, 11.1.1, 11.0.6, 10.12.4, 10.11.8
- Fix · GHSA-qvmc-92vg-6r35 github.com/mattermost/mattermost/server/v8 (Go) Fixed in 8.0.0-20251121122154-b57c297c6d7a Advisory →
- Fix · GHSA-qvmc-92vg-6r35 github.com/mattermost/mattermost-plugin-jira (Go) Fixed in 4.4.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-14273
- 2026-10-03 Alias added: GHSA-qvmc-92vg-6r35
References
Other 7
- https://github.com/mattermost/mattermost-plugin-jira/commit/bf9a1b7e81eb83304056b397c6abab3b062e14a2
- https://github.com/mattermost/mattermost/commit/317025c411ec8c34381fdd4f137a17c63895a4f2
- https://github.com/mattermost/mattermost/commit/463e0d0d3930782d3c975da26c991dcbfccd751c
- https://github.com/mattermost/mattermost/commit/7c36acb68ce3c69defaea540623f794c84ecba93
- https://github.com/mattermost/mattermost/commit/92b1e705225d97ce54d9f720f2e7aa66dc2a086b
- https://github.com/mattermost/mattermost/commit/b57c297c6d7ae6812d85e32a625806ac9555deee
- https://github.com/mattermost/mattermost
More Mattermost Server vulnerabilities
- TI-2025-18933 Arbitrary file read in Mattermost Boards via import & export board archive CVSS 3.1CRITICAL 9.9
- TI-2025-04465 Path Traversal Leading to RCE by Any Authenticated Mattermost User CVSS 3.1CRITICAL 9.9
- TI-2017-14068 An issue was discovered in Mattermost Server before 3.6.2. CVSS 3.1CRITICAL 9.8
- TI-2017-14060 An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. CVSS 3.1CRITICAL 9.8
- TI-2017-14048 An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. CVSS 3.1CRITICAL 9.8
- TI-2025-14360 Arbitrary file read via block duplication in Mattermost Boards CVSS 3.1CRITICAL 9.9
Sources
- CVE-2025-14273 · CVE Program
- CVE-2025-14273 · NVD
- FIRST EPSS
- GHSA-qvmc-92vg-6r35 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences