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CVE-2026-7521

nvd nist
Published: Jul 28, 2026Modified: Jul 29, 2026

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5.5
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
Exploitability: 1.2 / Impact: 4.2
Source: responsibledisclosure@mattermost.com (Secondary)

Description

Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to verify file deletion path which allows an admin with SAML system-console write permissions to delete arbitrary files outside the config directory from the server via the remove file endpoint.. Mattermost Advisory ID: MMSA-2026-00666

Affected (4)

Mattermost
1 product
Mattermost Server
Configuration A
4 vulnerable
Vulnerable SoftwareAffected Versions
Mattermost
Mattermost Server
From 10.11.0 to 10.11.21
Mattermost Server
From 11.6.0 to 11.6.6
Mattermost Server
From 11.7.0 to 11.7.4
Mattermost Server
From 11.8.0 to 11.8.1

Related CWEs

CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (1)

Source: responsibledisclosure@mattermost.com
Vendor Advisory

Timeline

No history available yet.