CVE-2026-8846
Deferred Deferred - Pending Action

Stored XSS in Tuxquote WordPress Plugin

Publication date: 2026-05-27

Last updated on: 2026-05-27

Assigner: Wordfence

Description
The Tuxquote plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'TUXQUOTE' shortcode in versions up to, and including, 1.3. This is due to insufficient input sanitization and output escaping on user supplied attributes ('title', 'align', and 'width') in the tuxquote_build_format() function, which are concatenated into the rendered HTML without being passed through esc_attr() or esc_html(). 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.

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Meta Information

Published
2026-05-27
Last Modified
2026-05-27
Generated
2026-07-06
AI Q&A
2026-05-27
EPSS Evaluated
2026-07-05
NVD
CVE-2026-8846
EUVD
EUVD-2026-32078

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wordpressextensions tuxquote to 1.3 (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

The Tuxquote plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) through its 'TUXQUOTE' shortcode in versions up to and including 1.3.

This vulnerability arises because the plugin does not properly sanitize or escape user-supplied attributes such as 'title', 'align', and 'width' in the tuxquote_build_format() function.

As a result, authenticated users with Contributor-level access or higher can inject malicious scripts into pages, which will execute whenever any user views those pages.

Impact Analysis

This vulnerability allows attackers with Contributor-level access or above to inject arbitrary web scripts into pages.

These scripts execute in the context of users who visit the affected pages, potentially leading to theft of user credentials, session hijacking, or unauthorized actions performed on behalf of users.

Because the attack is stored, the malicious script persists on the site and affects all visitors to the injected pages.

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