CVE-2026-41231 Froxlor has Incomplete Symlink Validation in DataDump.add() that Allows Arbitrary Directory Ownership Takeover via Cron
A customer can exploit incomplete symlink validation in Froxlor to take ownership of arbitrary directories via a root cron job, leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-41231?
CVE-2026-41231 is a high-severity path traversal vulnerability in froxlor, published on 23 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Froxlor is open source server administration software. Prior to version 2.3.6, `DataDump.add()` constructs the export destination path from user-supplied input without passing the `$fixed_homedir` parameter to `FileDir::makeCorrectDir()`, bypassing the symlink validation that was added to all other customer-facing path operations (likely as the fix for CVE-2023-6069). When the ExportCron runs as root, it executes `chown -R` on the resolved symlink target, allowing a customer to take ownership of arbitrary directories on the system. Version 2.3.6 contains an updated fix.
Weakness: CWE-59
Which versions are affected by CVE-2026-41231?
2 open source packages ship an affected version, including froxlor/froxlor. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
froxlor/froxlor Packagist | All versions | 2.3.6 |
froxlor/froxlor Packagist | All versions | 2.3.6 |
Products include Froxlor Froxlor.
How do I fix CVE-2026-41231?
Upgrade froxlor/froxlor to 2.3.6 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-41231 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41231 exists.
Other vulnerabilities in froxlor
- CVE-2026-41228 Froxlor has Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution
- CVE-2023-6069 Improper Link Resolution Before File Access in froxlor/froxlor
- CVE-2023-0671 Code Injection in froxlor/froxlor
- CVE-2023-3173 Improper Restriction of Excessive Authentication Attempts in froxlor/froxlor
- CVE-2023-1307 Authentication Bypass by Primary Weakness in froxlor/froxlor
Sources
Also known as GHSA-75h4-c557-j89r.