← Vulnerability feed

Vulnerability record · CVE-2026-41228 · published 23 April 2026

CVE-2026-41228: Froxlor php remote file inclusion vulnerability

Froxlor · Froxlor

Froxlor is open source server administration software. Prior to version 2.3.6, the Froxlor API endpoint `Customers.update` (and `Admins.update`) does not validate the `def_language` parameter against the list of available language files. An authenticated customer can set `def_language` to a path traversal payload (e.g., `../../../../../var/customers/webs/customer1/evil`), which is stored in the database. On subsequent requests, `Language::loadLanguage()` constructs a file path using this value and executes it via `require`, achieving arbitrary PHP code execution as the web server user. Version 2.3.6 fixes the issue.

9.9 CVSS 3.1 Critical EPSS 0.75% · top 46.9% CWE-98 · PHP remote file inclusion
9.9CVSS 3.1 base score
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Froxlor is open source server administration software. Prior to version 2.3.6, the Froxlor API endpoint `Customers.update` (and `Admins.update`) does not validate the `def_language` parameter against the list of available language files. An authenticated customer can set `def_language` to a path traversal payload (e.g., `../../../../../var/customers/webs/customer1/evil`), which is stored in the database. On subsequent requests, `Language::loadLanguage()` constructs a file path using this value and executes it via `require`, achieving arbitrary PHP code execution as the web server user. Version 2.3.6 fixes the issue.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/froxlor/froxlor/commit/bc5e6dbaa90e6f3573129da640595e8c770e1d0c Patch
https://github.com/froxlor/froxlor/releases/tag/2.3.6 Release Notes
https://github.com/froxlor/froxlor/security/advisories/GHSA-w59f-67xm-rxx7 ExploitMitigationVendor Advisory
https://github.com/froxlor/froxlor/security/advisories/GHSA-w59f-67xm-rxx7 ExploitMitigationVendor Advisory

Track CVE-2026-41228 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-3173Froxlor improper restriction of authentication attempts vulnerabilityImproper Restriction of Excessive Authentication Attempts in GitHub repository froxlor/froxlor prior to 2.0.20.EPSS 1.1%9.8CVE-2023-1307Froxlor vulnerabilityAuthentication Bypass by Primary Weakness in GitHub repository froxlor/froxlor prior to 2.0.13.EPSS 1.1%9.8CVE-2021-42325Froxlor sql injection vulnerabilityFroxlor through 0.10.29.1 allows SQL injection in Database/Manager/DbManagerMySQL.php via a custom DB name.EPSS 12%9.8CVE-2015-5959Froxlor information exposure vulnerabilityFroxlor before 0.9.33.2 with the default configuration/setup might allow remote attackers to obtain the database password by reading /logs/sql-error.…EPSS 3.1%9.8CVE-2016-5100Froxlor vulnerabilityFroxlor before 0.9.35 uses the PHP rand function for random number generation, which makes it easier for remote attackers to guess the password reset…EPSS 1.9%9.1CVE-2026-41229Froxlor code injection vulnerabilityFroxlor is open source server administration software. Prior to version 2.3.6, `PhpHelper::parseArrayToString()` writes string values into single-quo…EPSS 0.69%9.1CVE-2026-26279Froxlor os command injection vulnerabilityFroxlor is open source server administration software. Prior to 2.3.4, a typo in Froxlor's input validation code (== instead of =) completely disable…EPSS 1.1%8.8CVE-2023-6069Froxlor link following vulnerabilityImproper Link Resolution Before File Access in GitHub repository froxlor/froxlor prior to 2.1.0.EPSS 0.83%

Source: NIST National Vulnerability Database (record CVE-2026-41228), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.