What is CVE-2025-13326?

CVE-2025-13326 is a low-severity vulnerability in Mattermost, classified under Protection Mechanism Failure. CVSS score: 3.9/10. Published 2025-12-17.

How severe is CVE-2025-13326?

Low severity. CVSS v3 base score is 3.9 out of 10.

Vulnerability in Mattermost

CVE-2025-13326

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.

EPSS: 0.001 (0.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.9 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions 0, 6.0.0
Mattermost Mattermost_desktop

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-13326?: CVE-2025-13326 is a low-severity vulnerability in Mattermost, classified under Protection Mechanism Failure. CVSS score: 3.9/10. Published 2025-12-17.
How severe is CVE-2025-13326?: Low severity. CVSS v3 base score is 3.9 out of 10.