CVE-2026-83593 WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
Unauthenticated attackers can inject arbitrary scripts via the conversation parameter, leading to code execution or account takeover when users view the page.
- 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-2026-83593?
CVE-2026-83593 is a high-severity cross-site scripting vulnerability in quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'conversation' parameter in all versions up to, and including, 8.7.3 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. The action is gated only by a nonce that is localized into every public-facing page via wp_localize_script, rendering the nonce check ineffective as an access control barrier for unauthenticated users.
Weakness: CWE-79
Which versions are affected by CVE-2026-83593?
How do I fix CVE-2026-83593?
No fix has been published for CVE-2026-83593 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-2026-83593 being exploited?
There is no known exploitation of CVE-2026-83593 in the wild and no public exploit code.
Sources
Also known as GHSA-3ghv-v9gq-7ghq.