CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NCVE-2025-31363
Medium (6.5) in mattermost mattermost server. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost/server/v8 10.4.3, 10.5.1, 8.0.0-20250218121836-2b5275d87136.
Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.9 fail to restrict domains the LLM can request to contact upstream which allows an authenticated user to exfiltrate data from an arbitrary server accessible to the victim via performing a prompt injection in the AI plugin's Jira tool.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-9h6j-4ffx-cm84 | Go | github.com/mattermost/mattermost/server/v8 | >=10.5.0 <10.5.1 | 10.5.1 |
| GHSA-9h6j-4ffx-cm84 | Go | github.com/mattermost/mattermost/server/v8 | >=10.4.0 <10.4.3 | 10.4.3 |
| GHSA-9h6j-4ffx-cm84 | Go | github.com/mattermost/mattermost/server/v8 | >=9.11.0 <9.11.10 | 9.11.10 |
| GHSA-9h6j-4ffx-cm84 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250218121836-2b5275d87136 | 8.0.0-20250218121836-2b5275d87136 |
| GO-2025-3622 | Go | github.com/mattermost/mattermost-server | >=9.11.0+incompatible <9.11.10+incompatible >=10.4.0+incompatible <10.4.3+incompatible >=10.5.0+incompatible <10.5.1+incompatible | 9.11.10+incompatible, 10.4.3+incompatible, 10.5.1+incompatible |
| GO-2025-3622 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3622 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3622 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250218121836-2b5275d87136 | 8.0.0-20250218121836-2b5275d87136 |