CVE-2026-39654 WordPress WP Simple HTML Sitemap plugin <= 3.8 - Cross Site Scripting (XSS) vulnerability
An attacker can inject malicious scripts into the WP Simple HTML Sitemap plugin, potentially compromising user sessions or site integrity.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-39654?
CVE-2026-39654 is a medium-severity cross-site scripting vulnerability in Ashish Ajani WP Simple HTML Sitemap, published on 8 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Ashish Ajani WP Simple HTML Sitemap wp-simple-html-sitemap allows DOM-Based XSS.This issue affects WP Simple HTML Sitemap: from n/a through <= 3.8.
Weakness: CWE-79
Which versions are affected by CVE-2026-39654?
How do I fix CVE-2026-39654?
No fix has been published for CVE-2026-39654 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-2026-39654 being exploited?
There is no known exploitation of CVE-2026-39654 in the wild and no public exploit code.
Sources
Also known as GHSA-5hwx-hv3g-4j7m.