CVE-2026-39275

Deferred Deferred - Pending Action

Cross Site Scripting in Cockpit CMS

Publication date: 2026-08-26

Last updated on: 2026-08-31

Assigner: MITRE

Description

Cross Site Scripting vulnerability in Cockpit CMS v.2.13.5 and before allows a remote attacker to execute arbitrary code via the item.php, field-select.js and tags.js components

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-26

Last Modified

2026-08-31

Generated

2026-09-16

AI Q&A

2026-08-27

EPSS Evaluated

2026-09-15

NVD

CVE-2026-39275

Affected Vendors & Products

Vendor	Product	Version / Range
cockpit_cms	cockpit_cms	to 2.13.5 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This is a Cross Site Scripting (XSS) vulnerability in Cockpit CMS versions 2.13.5 and earlier. It allows a remote attacker to execute arbitrary code through vulnerable components like item.php, field-select.js, and tags.js.

Detection Guidance

This vulnerability involves Cross Site Scripting (XSS) in Cockpit CMS versions 2.13.5 and earlier. To detect it, inspect the components item.php, field-select.js, and tags.js for unusual input handling or script execution. Check for unencoded user inputs in these files that could allow malicious scripts. Review server logs for suspicious requests targeting these components.

Impact Analysis

An attacker could exploit this to run malicious scripts in a user's browser, potentially stealing session cookies, redirecting users to phishing sites, or performing actions on behalf of users without their consent.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection principles and HIPAA's security requirements. Organizations may face compliance breaches if exploited.

Mitigation Strategies

Upgrade Cockpit CMS to a version later than 2.13.5 to address the Cross Site Scripting vulnerability in item.php, field-select.js, and tags.js components.

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