RCE in Nuxsmin Syspass
CVE-2026-65711
sysPass through version 3.2.11 contains an OS command injection vulnerability that allows authenticated administrators to execute arbitrary commands as the web server process user by setting a malicious backup path and triggering a backup. The FileBackupService builds a tar shell command via string concatenation, inserting the admin-configurable siteBackupPath setting without escapeshellarg() or equivalent sanitization before passing it to exec(), causing injected commands to persist and execute on every subsequent backup trigger.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.024 (83.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Nuxsmin Syspass — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-65711?
- CVE-2026-65711 is a high-severity vulnerability in Nuxsmin Syspass, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-07-24.
- How severe is CVE-2026-65711?
- High severity. CVSS v3 base score is 7.2 out of 10.