CVE-2026-66591

Deferred Deferred - Pending Action

Stored XSS in Media Library Assistant

Publication date: 2026-08-18

Last updated on: 2026-08-21

Assigner: Patchstack

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in David Lingren Media LIbrary Assistant allows Stored XSS. This issue affects Media LIbrary Assistant: from n/a through 3.39.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-18

Last Modified

2026-08-21

Generated

2026-09-08

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-07

NVD

CVE-2026-66591

EUVD

EUVD-2026-62210

Affected Vendors & Products

Vendor	Product	Version / Range
david_lingren	media_library_assistant	to 3.39 (inc)

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 Stored Cross-Site Scripting (XSS) vulnerability where user input is not properly neutralized during web page generation. An attacker can inject malicious scripts that are stored on the server and later executed in the browsers of other users.

Detection Guidance

To detect this Stored XSS vulnerability in Media Library Assistant, inspect web application inputs for malicious scripts in fields like user profiles, comments, or uploads. Check server logs for unusual JavaScript execution or unexpected input patterns. Use tools like OWASP ZAP or Burp Suite to scan for XSS vulnerabilities.

Impact Analysis

An attacker could steal session cookies, redirect users to malicious sites, or perform actions on behalf of users. Users with access to sensitive data or admin privileges are particularly at risk.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face fines or legal consequences for non-compliance.

Mitigation Strategies

Update Media Library Assistant to the latest version beyond 3.39 to address the Stored XSS vulnerability. Review and sanitize all user inputs to prevent malicious scripts from being stored and executed.

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