CVE-2026-13731
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
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.
Risk Assessment
The risk includes session hijacking, redirection to malicious sites, or theft of sensitive data without authentication. This could lead to administrator account takeover and full site compromise.
Recommendation
Update the WPBot plugin to the latest patched version immediately. If not possible, temporarily disable the plugin until the update is applied.
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.
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, 8.4.9 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. The AJAX nonce required to authenticate the save request is publicly emitted on every frontend page via wp_localize_script, making it freely obtainable by any anonymous visitor and removing any practical barrier to exploitation.