CVE-2026-3524
Published:April 06, 2026
Updated:April 20, 2026
Mattermost Plugin Legal Hold versions <=1.1.4 fail to halt request processing after a failed authorization check in ServeHTTP which allows an authenticated attacker to access, create, download, and delete legal hold data via crafted API requests to the plugin's endpoints. Mattermost Advisory ID: MMSA-2026-00621
Affected Packages
https://github.com/mattermost/mattermost-plugin-legal-hold.git (GITHUB):
Affected version(s) >=v0.1.0 <v1.1.5Fix Suggestion:
Update to version v1.1.5github.com/mattermost/mattermost-plugin-legal-hold (GO):
Affected version(s) >=v0.0.0-20240303172229-436886b186c8 <v1.1.5Fix Suggestion:
Update to version v1.1.5Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Missing Authorization
EPSS
Base Score:
0.01
