# CVE-2025-31363

## Summary

- **CVE ID:** CVE-2025-31363
- **Severity:** LOW
- **CVSS Score:** 3 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N)
- **CWE:** CWE-1426
- **Published:** Apr 16, 2025
- **Last Modified:** Mar 12, 2026

## Description

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.

## Affected Products

- Mattermost — Mattermost (10.4.0)
- Mattermost — Mattermost (10.5.0)
- Mattermost — Mattermost (9.11.0)
- Mattermost — Mattermost (10.6.0)
- Mattermost — Mattermost (10.4.3)
- Mattermost — Mattermost (10.5.1)
- Mattermost — Mattermost (9.11.10)

## References

- [CNA](https://mattermost.com/security-updates)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.27%
- **EPSS Percentile:** 19.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._