CVE-2025-31363 – Mattermost Domain Exfiltration Vulnerability

The following table lists the changes that have been made to the
CVE-2025-31363 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Apr. 16, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
    Added Reference https://mattermost.com/security-updates
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