CVE-2025-13326

LOW

Mattermost Desktop App <6.0.0 - Privilege Escalation

Title source: llm

Description

Mattermost Desktop App versions <6.0.0 fail to enable the Hardened Runtime on the Mattermost Desktop App when packaged for Mac App Store which allows an attacker to inherit TCC permissions via copying the binary to a tmp folder.

References (1)

[Vendor Advisory] https://mattermost.com/security-updates

Scores

CVSS v3 3.9

EPSS 0.0002

EPSS Percentile 3.8%

Attack Vector LOCAL

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

Classification

CWE

CWE-693

Status published

Affected Products (1)

mattermost/mattermost_desktop < 6.0.0

Timeline

Published Dec 17, 2025

Tracked Since Feb 18, 2026