CVE-2025-13326

Mattermost Desktop App fails to enable Hardened Runtime when packaged for Mac App Store

LOW

3.9

CVSS Score

Published: December 17, 2025 at 06:14 PM UTC

Updated: October 13, 2026 at 11:10 AM UTC

2 products affected across 1 vendorMattermost DesktopMattermost

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Severity

LOW3.9

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mattermost Desktop · Mattermost

95%

v < 6.0.0

Mattermost · Mattermost

90%

0 ≤ v ≤ 6.0.0

Vendor states this is fixed in 6.0.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://mattermost.com/security-updates

References (1)

Vendor Advisory

Source: cverecord

https://mattermost.com/security-updates

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.9LOWMattermost

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-693

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