Access Control Vulnerability in Mattermost Products
CVE-2025-9081

3.1LOW

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
19 September 2025

What is CVE-2025-9081?

Mattermost versions 10.5.x up to 10.5.8 and 9.11.x up to 9.11.17 are susceptible to an access control misconfiguration. This vulnerability allows authenticated users to exploit the board file download endpoint, resulting in the ability to download sensitive files through UUID enumeration. It highlights the necessity for rigorous access control validation in software to prevent unauthorized information disclosure.

Affected Version(s)

Mattermost 10.5.0 <= 10.5.8

Mattermost 9.11.0 <= 9.11.17

Mattermost 10.11.0

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

daw10
.
CVE-2025-9081 : Access Control Vulnerability in Mattermost Products