Vulnerability · Published Apr 23, 2026 · Assigned by GitHub_M

CVE-2026-41229Froxlor has a PHP Code Injection via Unescaped Single Quotes in userdata.inc.php Generation (MysqlServer API)

Critical 9.1

In plain English

A critical-severity code injection in froxlor from froxlor. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.5%top 58.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Froxlor is open source server administration software. Prior to version 2.3.6, `PhpHelper::parseArrayToString()` writes string values into single-quoted PHP string literals without escaping single quotes. When an admin with `change_serversettings` permission adds or updates a MySQL server via the API, the `privileged_user` parameter (which has no input validation) is written unescaped into `lib/userdata.inc.php`. Since this file is `require`d on every request via `Database::getDB()`, an attacker can inject arbitrary PHP code that executes as the web server user on every subsequent page load. Version 2.3.6 contains a patch.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	froxlor/froxlor	2.3.6	GHSA-gc9w-cc93-rjv8

Affected products (as reported)

Vendor	Product	Versions
froxlor	froxlor	< 2.3.6

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References

https://github.com/froxlor/froxlor/security/advisories/GHSA-gc9w-cc93-rjv8 x_refsource_CONFIRM
https://github.com/froxlor/froxlor/commit/3589ddf93ab59eb2a8971f0f56cbf6266d03c4ae x_refsource_MISC
https://github.com/froxlor/froxlor/releases/tag/2.3.6 x_refsource_MISC