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LOW · 3.0

CVE-2025-31363

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 ...

Vulnerability 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.

CVSS Score

3.0

LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
MattermostMattermost Server>= 9.11.0, < 9.11.10

References

FAQ

What is CVE-2025-31363?

CVE-2025-31363 is a vulnerability with a CVSS score of 3.0 (LOW). 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 ...

How severe is CVE-2025-31363?

CVE-2025-31363 has been rated LOW with a CVSS base score of 3.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-31363?

Check the references section above for vendor advisories and patch information. Affected products include: Mattermost Mattermost Server.