CVE-2026-9148: Comments <= 7.6.56 - Unauthenticated Stored Cross-Site Scripting via 'Website' Field
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 commentauthorurl value directly into single-quoted HTML attributes without applying escurl() or escattr(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9148?
CVE-2026-9148 has a high severity rating of 7.2.
How do I fix CVE-2026-9148?
To fix CVE-2026-9148, update the wpDiscuz plugin to version 7.6.57 or later.
What type of vulnerability is CVE-2026-9148?
CVE-2026-9148 is classified as an Unauthenticated Stored Cross-Site Scripting (XSS) vulnerability.
What versions of the wpDiscuz plugin are affected by CVE-2026-9148?
wpDiscuz versions up to and including 7.6.56 are affected by CVE-2026-9148.
How does the CVE-2026-9148 vulnerability occur?
CVE-2026-9148 occurs due to insufficient output escaping in the getCommentAuthor() function, allowing exploitation via the guest commenter 'Website' field.