CVE-2025-9081
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-19

Last updated on: 2025-09-25

Assigner: Mattermost, Inc.

Description
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration
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Meta Information
Published
2025-09-19
Last Modified
2025-09-25
Generated
2026-06-16
AI Q&A
2025-09-19
EPSS Evaluated
2026-06-15
NVD
CVE-2025-9081
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
mattermost mattermost_server From 9.11.0 (inc) to 9.11.17 (exc)
mattermost mattermost_server From 10.5.0 (inc) to 10.5.9 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
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Executive Summary

This vulnerability exists in Mattermost versions 10.5.x up to 10.5.8 and 9.11.x up to 9.11.17, where the software fails to properly validate access controls. This flaw allows any authenticated user to download sensitive files by exploiting the board file download endpoint through UUID enumeration.

Impact Analysis

The vulnerability can lead to unauthorized access to sensitive files by any authenticated user, potentially exposing confidential information. This could result in data leakage and compromise of sensitive data within the affected Mattermost instance.

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