Medium severity · published Apr 16, 2025
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…
6.5
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Mattermost Server · Mattermost
9.11.0 before 9.11.10; 10.4.0 before 10.4.3; 10.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-31363
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-31363
Vendor Advisory
https://mattermost.com/security-updates
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