CVE-2026-18595 WP-Lister Lite for eBay <= 3.8.9 - Unauthenticated Stored Cross-Site Scripting via AJAX Cron Handler Request
Unauthenticated attackers can inject arbitrary web scripts via the AJAX Cron Handler, leading to stored XSS execution when users access affected pages.
- 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-2026-18595?
CVE-2026-18595 is a high-severity cross-site scripting vulnerability in wp-lab WP-Lister Lite for eBay, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The WP-Lister Lite for eBay plugin for WordPress is vulnerable to Stored Cross-Site Scripting via AJAX Cron Handler Request Parameter in all versions up to, and including, 3.8.9 due to insufficient input sanitization and output escaping. 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-2026-18595?
How do I fix CVE-2026-18595?
No fix has been published for CVE-2026-18595 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-2026-18595 being exploited?
There is no known exploitation of CVE-2026-18595 in the wild and no public exploit code.
Sources
Also known as GHSA-2g6g-5w2g-6pf8.