CVE-2026-100716

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 v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/froxlor/froxlor/security/advisories/GHSA-2wjc-6mgx-hq42
https://www.vulncheck.com/advisories/froxlor-before-2.3.12-privilege-escalation-via-symlink
https://github.com/froxlor/froxlor/security/advisories/GHSA-2wjc-6mgx-hq42

Configurations

No configuration.

History

28 Sep 2026, 15:17

Type	Values Removed	Values Added
References	~~() https://github.com/froxlor/froxlor/security/advisories/GHSA-2wjc-6mgx-hq42 -~~	() https://github.com/froxlor/froxlor/security/advisories/GHSA-2wjc-6mgx-hq42 -

26 Sep 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-26 14:16

Updated : 2026-09-28 15:17

NVD link : CVE-2026-100716

Mitre link : CVE-2026-100716

CVE.ORG link : CVE-2026-100716

JSON object : View

Products Affected

No product.

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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