CVE-2025-9079

Admin RCE via prepackaged plugins by way of misconfigured imports directory

State: Published
Severity: 8.0 High
Published: Sep 19, 2025
Updated: Feb 26, 2026
Reserved: Aug 15, 2025

Description

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to validate import directory path configuration which allows admin users to execute arbitrary code via malicious plugin upload to prepackaged plugins directory

Scores

CVSS	Score	Vector	Source
3.1	8.0 High	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H	Mattermost

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
MattermostMattermost	10.8.0 through 10.8.3Affected 10.5.0 through 10.5.8Affected 9.11.0 through 9.11.17Affected 10.10.0 through 10.10.1Affected 10.9.0 through 10.9.3Affected 10.11.0Not affected 10.8.4Not affected 10.5.9Not affected 9.11.18Not affected 10.10.2Not affected 10.9.4Not affected

References

https://mattermost.com/security-updates

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