CVE-2026-83593: WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
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 wplocalizescript, rendering the nonce check ineffective as an access control barrier for unauthenticated users.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An unauthenticated remote attacker can exploit it. Although the vulnerable action checks a nonce, that nonce is exposed on every public-facing page, so it does not provide an effective access-control barrier.
Which installations are affected?
All WPBot versions up to and including 8.7.3 are affected. The issue concerns the plugin’s handling of the conversation parameter.
What happens after a successful injection?
An attacker can store arbitrary web script in an injected page. The script executes when a user accesses that page, which can affect users who view the stored payload.