PT-2025-34231 · Foxcms · Foxcms

Published 2025-08-21 · Updated 2025-08-21 · CVE-2025-55420

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: FoxCMS version 1.2.6

Description: A Reflected Cross Site Scripting (XSS) vulnerability exists in the /index.php endpoint of the software. When a crafted script is sent via a GET request, it is reflected unsanitized into the HTML response, allowing for the execution of arbitrary JavaScript code when a logged-in user submits the malicious input.

Recommendations: Update to a newer version that contains a fix for this issue. As a temporary workaround, sanitize all user inputs before processing them to prevent the injection of malicious scripts.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-55420

Affected Products

Foxcms

References · 5

• 🔥 https://notion.so/FoxCMS-V1-2-6-Reflected-XSS-in-index-php-2222b2fd021080589d27ef8e1b9ebd86?source=copy_link · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-55420 · Security Note
• https://osv.dev/vulnerability/CVE-2025-55420 · Vendor Advisory
• https://twitter.com/CVEnew/status/1958603408677748805 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1958647683221971363 · Twitter Post