CVE-2025-9079Admin RCE via prepackaged plugins by way of misconfigured imports directory
Updated under an hour ago ()
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It affects Mattermost and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- CVSS
- 8.0 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Mattermost
- NVD analysis
- Analyzed
- Record last updated
- Feb 26, 2026
- First seen by InfoSec Signals
- Oct 19, 2026
Affected products
Mattermost Mattermost mattermost:mattermost (from the name) | from 10.8.0 through 10.8.3; from 10.5.0 through 10.5.8; from 9.11.0 through 9.11.17; from 10.10.0 through 10.10.1; from 10.9.0 through 10.9.3; 10.11.0 not affected; 10.8.4 not affected; 10.5.9 not affected; and 3 more ranges | CNA record |
mattermost mattermost_server mattermost:mattermost_server | from 9.11.0 before 9.11.18; from 10.5.0 before 10.5.9; from 10.8.0 before 10.8.4; from 10.9.0 before 10.9.4; from 10.10.0 before 10.10.2 | NVD |
References
- https://mattermost.com/security-updatesvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.