CVE-2025-31363
low-risk
Published 2025-04-16
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.
Do I need to act?
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0.16% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.0/10
Low
NETWORK
/ HIGH complexity
Affected Products (2)
Affected Vendors
References (1)
Vendor Advisory
https://mattermost.com/security-updates
19
/ 100
low-risk
Severity
11/34 · Low
Exploitability
1/34 · Minimal
Exposure
7/34 · Low