CVE-2026-41236
CVE-2026-41236 · Froxlor has privilege escalation in SSH key synchronization via symlinked `authorized_keys` path
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Froxlor is open source server administration software. Version 2.3.6 contains a symlink-following flaw in the root-owned SSH key synchronization path used for customer FTP users. The provisioning code appends public keys to `~/.ssh/authorized_keys` under a customer-controlled home directory without verifying that the target path is not a symbolic link. If an attacker controls a shell-enabled customer account and can modify files inside the assigned home directory, the attacker can replace `~/.ssh/authorized_keys` with a symlink to `/root/.ssh/authorized_keys`. When Froxlor's privileged cron task later synchronizes SSH keys, it appends the attacker-supplied key into root's authorized key file, resulting in root SSH access. Version 2.3.7 contains a patch.
CVSS 8.8 · High · EPSS 0.6% · Fix available
- Published
- Updated
Stack: php
Affected products and versions
froxlor
- Versions
- = 2.3.6: Affected
No fix published
froxlor/froxlor Packagist
- Versions
- 2.3.6
- Affected ranges
- ECOSYSTEM: ≥ 2.3.6, < 2.3.7
Update to 2.3.7