AI plugin APIs can be triggered using post actions
Priority LOW 16CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Mattermost Server versions 10.5.x <= 10.5.9 utilizing the Agents plugin fail to reject empty request bodies which allows users to trick users into clicking malicious links via post actions
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00191 8th percentileScored 2026-11-07
Fix Fixed Mattermost (Mattermost): 10.10.0, 10.5.9github.com/mattermost/mattermost-server (Go): 10.5.10+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 | 10.5.0 – 10.5.8 | 10.10.0, 10.5.9 | Patch available | CNA |
| — | github.com/mattermost/mattermost-server (Go) | 10.5.0 to before 10.5.10 | 10.5.10 | Patch available | GHSA-vqwh-5jhh-vc9p |
| — | github.com/mattermost/mattermost/server/v8 (Go) | before 8.0.0-20250814075248-83a37a861d3c | 8.0.0-20250814075248-83a37a861d3c | Patch available | GHSA-vqwh-5jhh-vc9p |
- Mattermost VendorMattermost Affected 10.5.0 – 10.5.8 Fixed in 10.10.0, 10.5.9 Patch available CNA
- github.com/mattermost/mattermost-server (Go) Vendor— Affected 10.5.0 to before 10.5.10 Fixed in 10.5.10 Patch available GHSA-vqwh-5jhh-vc9p
- github.com/mattermost/mattermost/server/v8 (Go) Vendor— Affected before 8.0.0-20250814075248-83a37a861d3c Fixed in 8.0.0-20250814075248-83a37a861d3c Patch available GHSA-vqwh-5jhh-vc9p
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | 10.5.0 to before 10.5.9 | Vulnerable | Mattermost |
- cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* Versions 10.5.0 to before 10.5.9 Vulnerable ·Mattermost
Remediation
- Fix · CNA Mattermost (Mattermost) Fixed in 10.10.0, 10.5.9
- Fix · GHSA-vqwh-5jhh-vc9p github.com/mattermost/mattermost-server (Go) Fixed in 10.5.10 Advisory →
- Fix · GHSA-vqwh-5jhh-vc9p github.com/mattermost/mattermost/server/v8 (Go) Fixed in 8.0.0-20250814075248-83a37a861d3c Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-47700
- 2026-10-03 Alias added: GHSA-vqwh-5jhh-vc9p
References
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-2025-47700 · CVE Program
- CVE-2025-47700 · NVD
- FIRST EPSS
- GHSA-vqwh-5jhh-vc9p · 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