CVE-2026-7521

Severity CVSS v4.0:

Pending analysis

Type:

CWE-22 Path Traversal

Publication date:

28/07/2026

Last modified:

28/07/2026

Description

Mattermost versions 11.8.x

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): Low
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://mattermost.com/security-updates