CVE-2026-120658
Deferred Deferred - Pending Action

Stored XSS in WordPress Download Manager Plugin

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: Wordfence

Description
The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'file[additional_previews][]' parameter in all versions up to, and including, 7.6.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The wpdm_sanitize_array() function strips HTML tags via wp_kses but leaves bare single quotes intact and calls stripslashes_deep() which defeats WordPress magic quotes protection, allowing a single-quote-based attribute breakout payload to be stored verbatim and later rendered without escaping.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-120658
EUVD
EUVD-2026-124985

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
codename065 Download Manager From 6.0.0 (inc) to 7.6.3 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the Download Manager WordPress plugin affecting versions up to 7.6.3. It allows authenticated attackers with author-level access or higher to inject malicious scripts via the 'file[additional_previews][]' parameter. The issue stems from insufficient input sanitization and output escaping, enabling script execution when users access infected pages.

Detection Guidance

Check for unauthorized script injections in WordPress pages or posts by inspecting page source for malicious scripts. Review user roles with author-level access or higher for suspicious activity. Use WordPress security plugins to scan for stored XSS vulnerabilities in the Download Manager plugin.

Impact Analysis

An attacker could steal user sessions, redirect to malicious sites, or perform actions on behalf of users. Since it requires author-level access, only users with editing privileges can exploit it. The impact includes potential data theft, account compromise, or defacement of affected WordPress sites.

Compliance Impact

This XSS vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality requirements. For HIPAA, it may expose protected health information if exploited on healthcare-related sites. Both standards mandate protection against such attacks to ensure data security.

Mitigation Strategies

Update the Download Manager plugin to the latest version immediately. Remove or restrict author-level and higher user roles to minimize attack surface. Implement additional input sanitization for file uploads and review all stored files for malicious content.

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