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CVE-2026-3524 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: April 6, 2026

Mattermost Plugin Legal Hold - Broken Access Control

Published: April 6, 2026Updated: April 6, 2026Remote Exploitable

Overview

Mattermost Plugin Legal Hold <= 1.1.4 contains a broken access control caused by failure to halt request processing after failed authorization in ServeHTTP, letting authenticated attackers access and manipulate legal hold data via crafted API requests.

Severity & Score

Severity: High

CVSS Score: 8.8

Impact

Authenticated attackers can access, create, download, and delete legal hold data, risking data integrity and confidentiality.

Mitigation

Update to a version later than 1.1.4.

References

https://mattermost.com/security-updates

Related Resources

Vulnerability Intelligence Dashboard
Credential Scanner

Details

CVE ID: CVE-2026-3524
Severity: High
CVSS Score: 8.8
Type: broken_access_control
Status: new

CWE

CWE-862

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H