CVE-2025-31363: Data exfiltration via AI plugin Jira tool
First published: Wed Apr 16 2025(Updated: )
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.
Credit: responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost | <=10.4.2<=10.5.0<=9.11.9 | |
| go/github.com/mattermost/mattermost/server/v8 | <8.0.0-20250218121836-2b5275d87136 | 8.0.0-20250218121836-2b5275d87136 |
| go/github.com/mattermost/mattermost/server/v8 | >=9.11.0<9.11.10 | 9.11.10 |
| go/github.com/mattermost/mattermost/server/v8 | >=10.4.0<10.4.3 | 10.4.3 |
| go/github.com/mattermost/mattermost/server/v8 | >=10.5.0<10.5.1 | 10.5.1 |
Remedy
Update Mattermost to versions 10.6.0, 10.4.3, 10.5.1, 9.11.10 or higher.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-31363?
CVE-2025-31363 has been rated as a critical vulnerability due to its potential to allow data exfiltration.
How do I fix CVE-2025-31363?
To fix CVE-2025-31363, upgrade to Mattermost versions 10.5.1 or later, or 9.11.10 or later.
Who is affected by CVE-2025-31363?
CVE-2025-31363 affects Mattermost versions 10.4.2, 10.5.0, and 9.11.9.
What action should I take if I can't update to a safe version for CVE-2025-31363?
If unable to update, consider implementing stricter access controls and monitoring user activities until a patch can be applied.
What type of attack is associated with CVE-2025-31363?
CVE-2025-31363 is associated with prompt injection attacks that can lead to unauthorized data access.
- agent/remedy
- agent/title
- agent/first-publish-date
- agent/type
- agent/description
- agent/guess-ai
- agent/software-canonical-lookup
- agent/severity
- agent/author
- collector/nvd-api
- source/NVD
- agent/weakness
- agent/softwarecombine
- agent/source
- collector/nvd-cve
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-9h6j-4ffx-cm84
- alias/CVE-2025-31363
- agent/tags
- agent/event
- vendor/mattermost
- canonical/mattermost
- package-manager/go