CVE-2026-9148 Comments <= 7.6.56 - Unauthenticated Stored Cross-Site Scripting via 'Website' Field
Unauthenticated attackers can inject arbitrary scripts via the Website field in wpDiscuz, leading to code execution when users view comments.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9148?
CVE-2026-9148 is a high-severity cross-site scripting vulnerability in advancedcoding Comments – wpDiscuz, published on 3 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-9148?
How do I fix CVE-2026-9148?
No fix has been published for CVE-2026-9148 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-9148 being exploited?
There is no known exploitation of CVE-2026-9148 in the wild and no public exploit code.
Sources
Also known as GHSA-mh45-hp98-pch7.