Vulnerability Description
Froxlor is a server administration panel. In versions 2.3.10 and earlier, the customer data-export (DataDump) cron fails to validate intermediate path components of the export destination: Froxlor\FileDir::makeCorrectDir() contains an off-by-one in its path-component walk that skips the first segment below the customer home directory, and the guard in ExportCron.php checks only the final component with is_link(). An authenticated customer whose account has the export feature enabled can schedule an export into a genuine subdirectory of their own webspace, then replace an intermediate path component with a symlink before the root-owned cron runs. The cron's `chown -R` then recursively changes ownership of the linked directory tree — for example /etc — to the customer's UID, yielding host root and cross-tenant compromise. Exploitation is deterministic and requires no race. This is an incomplete fix of GHSA-75h4-... The issue is fixed in Froxlor 2.3.12.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/froxlor/froxlor/security/advisories/GHSA-2wjc-6mgx-hq42
- https://www.vulncheck.com/advisories/froxlor-before-2.3.12-privilege-escalation-
- https://github.com/froxlor/froxlor/security/advisories/GHSA-2wjc-6mgx-hq42
FAQ
What is CVE-2026-100716?
CVE-2026-100716 is a vulnerability with a CVSS score of 9.9 (CRITICAL). Froxlor is a server administration panel. In versions 2.3.10 and earlier, the customer data-export (DataDump) cron fails to validate intermediate path components of the export destination: Froxlor\Fil...
How severe is CVE-2026-100716?
CVE-2026-100716 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-100716?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.