Hardened Runtime Bypass in Mattermost Desktop App for Mac
CVE-2025-13326

3.9LOW

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
17 December 2025

What is CVE-2025-13326?

The Mattermost Desktop App versions below 6.0.0 for macOS exhibit a flaw where the Hardened Runtime is not enabled when packaged for the Mac App Store. This security oversight permits an attacker to exploit the system by copying the application binary to a temporary folder, potentially inheriting TCC (Transparency, Consent, and Control) permissions. Such exploitation can lead to unauthorized access and manipulation of application data, posing significant risks to user security.

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Affected Version(s)

Mattermost 0 <= 6.0.0

Mattermost 6.0.0

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
3.9
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karmaz95
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