CRLF injection in Froxlor - CVE-2026-90767
Published: November 9, 2026 / Updated: November 10, 2026
Vulnerability identifier: #VU162731
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90767
CWE-ID: CWE-93
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an authenticated customer with SSH access to preserve access to their own shell account after panel-side revocation.
The vulnerability exists due to missing newline validation in Froxlor's SshKeys API, allowing multiline ssh_pubkey submissions to reach ~/.ssh/authorized_keys through cron when system.allow_customer_shell and the customer's shell_allowed are enabled. An authenticated customer with SSH access can inject additional keys that survive regeneration and panel-side deletion as unmanaged entries.
Affected software
Froxlor
How to mitigate CVE-2026-90767
Install security update from vendor's website.
Froxlor - update to 2.3.12