# CVE-2026-100716: Froxlor server administration panel symlink path traversal privilege escalation

Source: https://junglewise.ai/threats/cve-2026-100716-froxlor-is-a-server-administration-panel-in-versions-2-3-10-and  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-26. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-100716 · Severity: critical · CVSS 9.9 · Published 2026-09-26

Froxlor is a server administration panel for hosting management. A flaw in its customer data-export feature allows authenticated customers to trick the root-owned cron job into changing ownership of arbitrary system directories—such as /etc—to their user account. An attacker can gain complete control of the server and access other customers' data through this deterministic exploit that requires no race conditions.

Technologies: [Froxlor](https://junglewise.ai/threats/technologies/froxlor). Vendors: [Froxlor](https://junglewise.ai/threats/vendors/froxlor).

## Quick answers

**Is CVE-2026-100716 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-100716 being exploited in the wild.

**How severe is CVE-2026-100716?** Critical severity, with a CVSS score of 9.9, published 26 September 2026.

**Which products and versions are affected?** Froxlor 2.3.10 and earlier.

**Is there a fix for CVE-2026-100716?** A patch was published on 2026-09-26: Fixed in Froxlor 2.3.12 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-100716 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-100716?** Check whether you run Froxlor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability stems from two compounding defects: an off-by-one error in FileDir::makeCorrectDir() that skips symlink validation of the first path segment below the customer's home directory, and an incomplete guard in ExportCron.php that checks only the final path component with is_link(). An authenticated customer with export privileges can schedule an export to a genuine subdirectory, then replace an intermediate path component with a symlink before the root cron executes, causing chown -R to recursively transfer ownership of the linked directory tree to the customer's UID.

## Affected products

- Froxlor Froxlor 2.3.10 and earlier

## Timeline

- 2026-09-26: disclosed
- 2026-09-26: patched: Fixed in Froxlor 2.3.12

## References

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

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