CVE-2026-83593
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
The WPBot – AI ChatBot plugin for WordPress up to version 8.7.3 is vulnerable to Stored Cross-Site Scripting via the 'conversation' parameter due to insufficient input sanitization and output escaping. Unauthenticated attackers can inject arbitrary web scripts that execute when a user accesses an injected page. The nonce-based protection is ineffective because the nonce is localized on every public-facing page.
Risk Assessment
The risk includes session theft, account takeover, and the spread of malicious code within the WordPress site.
Recommendation
Update the plugin to the latest patched version. Additionally, restrict access to pages with injected scripts and monitor logs for unusual activity.
Other vulnerabilities in WPBot – AI ChatBot
See all- CVE-2026-16773Medium
The WPBot – AI ChatBot plugin for WordPress up to version 8.5.9 is vulnerable to Sensitive Information Exposure via the wpbot_send_email_transcript_free function. This allows unauthenticated attackers to exfiltrate full chat transcripts and associated user PII (names, email addresses, phone numbers) stored in the wpbot_user and wpbot_conversation tables to an attacker-controlled email address.
- CVE-2026-15610Medium
The WPBot – AI ChatBot plugin for WordPress up to version 8.5.6 has an authorization bypass vulnerability. An authenticated attacker with subscriber-level access or higher can trigger arbitrary re-embedding of stored RAG documents, modifying the rag_documents table and consuming the site owner's paid third-party AI API credits (OpenAI, Gemini, OpenRouter, or xAI).
- CVE-2026-15106Medium
The WPBot – AI ChatBot plugin for WordPress up to version 8.5.6 has an authorization bypass vulnerability that allows unauthenticated attackers to delete arbitrary chat session records from the database, including chat history and conversation logs. The issue stems from insufficient user permission verification before performing actions.
- CVE-2026-13731High
The WPBot – AI ChatBot plugin for WordPress up to version 8.4.9 is vulnerable to stored cross-site scripting via the 'conversation' parameter due to insufficient input sanitization and output escaping. Unauthenticated attackers can inject arbitrary web scripts that execute when users access affected pages. The AJAX nonce required for saving is publicly exposed on every frontend page, removing practical exploitation barriers.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS