CVE-2025-31363

Data exfiltration via AI plugin Jira tool

Published Apr 16, 2025 CVSS 3.1 · 3 Low EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Update Mattermost to versions 10.6.0, 10.4.3, 10.5.1, 9.11.10 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-11357 Mattermost doesn't restrict domains LLM can request to contact upstream
Github GHSA Github GHSA GHSA-9h6j-4ffx-cm84 Mattermost doesn't restrict domains LLM can request to contact upstream
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost Server
Weaknesses NVD-CWE-Other
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:10.5.0:-:*:*:*:*:*:*
Vendors & Products Mattermost
Mattermost mattermost Server
Type Values Removed Values 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.
Title Data exfiltration via AI plugin Jira tool
Weaknesses CWE-1426
References
Metrics cvssV3_1

{'score': 3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Apr 16, 2025, 2:33 PM
Reserved
Apr 8, 2025, 7:50 AM
Status
Analyzed
Published
Apr 16, 2025, 10:15 AM
Modified
Jun 17, 2026, 9:10 AM