PT-2026-22840 · Froxlor · Froxlor

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CVE-2026-26279

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Published

2026-03-03

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Updated

2026-03-23

CVSS v3.1

9.1

Critical

VectorAV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Froxlor versions prior to 2.3.4
Description Froxlor is open source server administration software. A typo in the input validation code (using '==' instead of '=') disables email format checking for settings fields designated as email type. This allows an authenticated administrator to store arbitrary strings in the panel.adminmail setting. This value is then incorporated into a shell command executed as root by a cron job, with the pipe character '|' explicitly permitted. This results in root-level Remote Code Execution. The issue stems from a comparison operator being used instead of an assignment operator, effectively bypassing validation. The panel.adminmail setting is used in a shell command executed by a cron job, allowing for command injection.
Recommendations Versions prior to 2.3.4 should be updated to version 2.3.4.

Exploit

Fix

RCE

LPE

OS Command Injection

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Weakness Enumeration

Related Identifiers

CVE-2026-26279
GHSA-33MP-8P67-XJ7C

Affected Products

Froxlor