CVE-2026-14343
Received Received - Intake

Stored XSS in WordPress Download Manager Plugin via Shortcode Attributes

Publication date: 2026-07-09

Last updated on: 2026-07-09

Assigner: Wordfence

Description
The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'note_before' and 'note_after' Shortcode Attributes in all versions up to, and including, 3.3.61 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because wp_kses_post filters post content on save for users without unfiltered_html, only kses-allowed tag and attribute payloads that survive save-time filtering will reach the unescaped sink; however, the sink itself remains unsafe and such payloads can still execute in the browser when a user renders the shortcode.

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Meta Information

Published
2026-07-09
Last Modified
2026-07-09
Generated
2026-07-09
AI Q&A
2026-07-09
EPSS Evaluated
N/A
NVD
CVE-2026-14343
EUVD
EUVD-2026-42522

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wordfence download_manager to 3.3.61 (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

The Download Manager plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in the 'note_before' and 'note_after' shortcode attributes in all versions up to and including 3.3.61.

This vulnerability arises because the plugin does not properly sanitize input or escape output, allowing authenticated users with contributor-level access or higher to inject malicious web scripts.

These injected scripts execute whenever a user views a page containing the injected shortcode, potentially compromising the user's browser.

Although WordPress filters post content for users without unfiltered_html capability, some allowed tags and attributes can still carry payloads that execute in the browser due to unsafe output handling.

Impact Analysis

This vulnerability can allow an attacker with contributor-level access to inject malicious scripts into pages viewed by other users.

Such scripts can execute in the browsers of users who visit the affected pages, potentially leading to theft of session cookies, defacement, or other malicious actions.

Because the attack requires authenticated access, it may be limited to environments where users have contributor or higher privileges, but the impact on affected users can be significant.

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