TI-2026-29845 Aliases CVE-2026-41236 GHSA-mq5v-pxpm-8jw2

Froxlor has privilege escalation in SSH key synchronization via symlinked `authorized_keys` path

HIGH 73CWE-59Published 2026-06-04 · Updated 2026-06-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00366 30th percentileScored 2026-11-07

Fix Fixed froxlor/froxlor (Packagist): 2.3.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
froxlor	froxlor	= 2.3.6	—	No fix listed	CNA
—	froxlor/froxlor (Packagist)	2.3.6 to before 2.3.7	2.3.7	Patch available	GHSA-mq5v-pxpm-8jw2

froxlor Vendorfroxlor Affected = 2.3.6 Fixed in — No fix listed CNA
froxlor/froxlor (Packagist) Vendor— Affected 2.3.6 to before 2.3.7 Fixed in 2.3.7 Patch available GHSA-mq5v-pxpm-8jw2

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:froxlor:froxlor::::::::	—	—	froxlor

cpe:2.3:a:froxlor:froxlor:*:*:*:*:*:*:*:* Versions — — ·froxlor

Remediation

Fix · GHSA-mq5v-pxpm-8jw2 froxlor/froxlor (Packagist) Fixed in 2.3.7 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-41236
2026-10-03 Alias added: GHSA-mq5v-pxpm-8jw2

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-41236

Other 3

TI-2023-00300 Command Injection in froxlor/froxlor CVSS 3.1HIGH 8.8
TI-2023-02973 Improper Restriction of Excessive Authentication Attempts in froxlor/froxlor CVSS 3.1CRITICAL 9.8
TI-2023-01234 Authentication Bypass by Primary Weakness in froxlor/froxlor CVSS 3.1CRITICAL 9.8
TI-2023-01911 Unrestricted Upload of File with Dangerous Type in froxlor/froxlor CVSS 3.1HIGH 8.8
TI-2026-64867 froxlor before 2.3.12 Authentication Bypass via Session Persistence CVSS 4.0HIGH 8.7
TI-2026-76945 Symlink following in Froxlor enables root privilege escalation CVSS 4.0CRITICAL 9.4

See all 86 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences