What’s Vulnerable › Vulnerabilities

CVE-2026-41231: Froxlor has Incomplete Symlink Validation in DataDump.add() that Allows Arbitrary Directory Ownership Takeover via Cron

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-23 · updated 2026-06-17
• Weakness: CWE-59

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.

Affected products

• froxlor: before 2.3.6 — fixed in 2.3.6

How to fix

Upgrade to a fixed version: froxlor 2.3.6. Check the vendor advisory for mitigations.

References

• https://github.com/froxlor/froxlor/commit/2987b0e8806ef12b532410050ad76d13d673a87d
• https://github.com/froxlor/froxlor/releases/tag/2.3.6
• https://github.com/froxlor/froxlor/security/advisories/GHSA-75h4-c557-j89r
• https://github.com/froxlor/froxlor/security/advisories/GHSA-75h4-c557-j89r

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