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Vulnerability record · CVE-2025-55420 · published 21 August 2025

CVE-2025-55420: Foxcms cross-site scripting vulnerability

Foxcms · Foxcms

A Reflected Cross Site Scripting (XSS) vulnerability was found in /index.php in FoxCMS v1.2.6. When a crafted script is sent via a GET request, it is reflected unsanitized into the HTML response. This permits execution of arbitrary JavaScript code when a logged-in user submits the malicious input.

8.8 CVSS 3.1 High EPSS 0.49% · top 60.1% CWE-79 · Cross-site scripting
8.8CVSS 3.1 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

A Reflected Cross Site Scripting (XSS) vulnerability was found in /index.php in FoxCMS v1.2.6. When a crafted script is sent via a GET request, it is reflected unsanitized into the HTML response. This permits execution of arbitrary JavaScript code when a logged-in user submits the malicious input.

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

Affected products

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

References

LinkTags
https://www.notion.so/FoxCMS-V1-2-6-Reflected-XSS-in-index-php-2222b2fd021080589d27ef8e1b9ebd86?source=copy_link ExploitThird Party Advisory

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Related vulnerabilities

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

9.8CVE-2025-50692Foxcms code injection vulnerabilityFoxCMS <=v1.2.5 is vulnerable to Code Execution in admin/template_file/editFile.html.EPSS 0.65%9.8CVE-2025-29306FoxCMS index.html case display page code injectionFoxCMS 1.2.5 contains a code injection flaw (CWE-94) reachable through the case display page in the index.html component, allowing a remote attacker …EPSS 47%analysed9.8CVE-2025-25789Foxcms code injection vulnerabilityFoxCMS v1.2.5 was discovered to contain a remote code execution (RCE) vulnerability via the index() method at \controller\Sitemap.php.EPSS 1.3%9.8CVE-2025-25790Foxcms unrestricted file upload vulnerabilityAn arbitrary file upload vulnerability in the component \controller\LocalTemplate.php of FoxCMS v1.2.5 allows attackers to execute arbitrary code via…EPSS 0.91%8.8CVE-2025-55422Foxcms cross-site scripting vulnerabilityIn FoxCMS 1.2.6, there is a reflected Cross Site Scripting (XSS) vulnerability in /index.php/plus.EPSS 0.42%8.8CVE-2025-55409Foxcms cross-site scripting vulnerabilityFoxCMS 1.2.6, there is a Cross Site Scripting vulnerability in /index.php/article. This allows attackers to execute arbitrary code.EPSS 0.49%8.4CVE-2025-46154Foxcms sql injection vulnerabilityFoxcms v1.25 has a SQL time injection in the $_POST['dbname'] parameter of installdb.php.EPSS 0.22%7.3CVE-2025-56630Foxcms sql injection vulnerabilityFoxCMS v1.2.5 and before is vulnerable to SQL Injection via the column_model parameter in the app/admin/controller/Column.php file.EPSS 0.22%

Source: NIST National Vulnerability Database (record CVE-2025-55420), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.