CVE-2025-31363

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CVSS 3.1

6.5 medium

EPSS

<1%p19

Published

Apr 16, 2025 (Apr 16, 2025)

Modified

Jun 17, 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.

Vendors: mattermost
Products: mattermost server
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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