CVE-2026-41236 Details
Description
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.
A symlink-following vulnerability has been identified in Froxlor version 2.3.6, specifically within the SSH key synchronization process for customer FTP users. The issue arises because the application appends public keys to the `~/.ssh/authorized_keys` file in a customer-controlled home directory without checking if the target path is a symbolic link. An attacker with control over a shell-enabled customer account can exploit this flaw by replacing the `authorized_keys` file with a symlink to the root `authorized_keys` file. When Froxlor's privileged cron task later synchronizes SSH keys, it inadvertently adds the attacker’s key to the root's authorized keys, granting root SSH access.
Users can upgrade to Froxlor version 2.3.7, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 4, 2026CISA-ADP
Assessed Jun 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/froxlor/froxlor/security/advisories/GHSA-mq5v-pxpm-8jw2 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/froxlor/froxlor/releases/tag/2.3.7 | [email protected] | Release NotesVendor |
| https://github.com/froxlor/froxlor/security/advisories/GHSA-mq5v-pxpm-8jw2 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-59 | Improper Link Resolution Before File Access ('Link Following') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Froxlor | 2.3.6 (semver) |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 8, 2026 | CVE Modified | CISA-ADP |
| Jun 4, 2026 | New CVE Received | [email protected] |