CVE-2026-9148
Received Received - Intake

Stored XSS in wpDiscuz WordPress Plugin via Guest Commenter Website Field

Publication date: 2026-07-03

Last updated on: 2026-07-03

Assigner: Wordfence

Description
The Comments – wpDiscuz plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the guest commenter 'Website' field in versions up to, and including, 7.6.56 This is due to insufficient output escaping in the getCommentAuthor() function, which interpolates the stored comment_author_url value directly into single-quoted HTML attributes without applying esc_url() or esc_attr(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-07-03
Last Modified
2026-07-03
Generated
2026-07-03
AI Q&A
2026-07-03
EPSS Evaluated
N/A
NVD
CVE-2026-9148
EUVD
EUVD-2026-41514

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wpdiscuz wpdiscuz to 7.6.56 (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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Impact Analysis

This vulnerability can allow attackers to execute arbitrary scripts in the context of the affected website. This can lead to several impacts including theft of user credentials, session hijacking, defacement of the website, or distribution of malware to visitors.

Because the attack can be performed by unauthenticated users and affects all visitors who view the injected comment, it poses a significant security risk to both site administrators and users.

Executive Summary

The Comments – wpDiscuz plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in versions up to and including 7.6.56. This vulnerability arises because the plugin does not properly escape output in the getCommentAuthor() function. Specifically, the guest commenter's 'Website' field is directly inserted into single-quoted HTML attributes without using proper escaping functions like esc_url() or esc_attr().

As a result, an unauthenticated attacker can inject malicious scripts into the website via the 'Website' field in comments. These scripts will execute whenever any user views the affected page, potentially compromising user security.

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