GHSA-9h6j-4ffx-cm84
Mattermost doesn't restrict domains LLM can request to contact upstream
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.5.0, < 10.5.1 | 10.5.1 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.4.0, < 10.4.3 | 10.4.3 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.11.0, < 9.11.10 | 9.11.10 |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250218121836-2b5275d87136 | 8.0.0-20250218121836-2b5275d87136 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.