CVE-2026-15610 in WPBot Plugin
Summary
by MITRE • 07/16/2026
The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 8.5.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to 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).
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Analysis
by VulDB Data Team • 07/16/2026
The WPBot plugin for WordPress presents a critical authorization bypass vulnerability that affects all versions up to and including 8.5.6, creating a significant security risk for WordPress sites utilizing this artificial intelligence chatbot solution. This vulnerability stems from inadequate user permission verification mechanisms within the plugin's codebase, specifically failing to properly validate whether authenticated users possess adequate privileges to execute sensitive operations. The flaw allows attackers with subscriber-level access or higher to exploit the system, representing a serious escalation of privileges issue that undermines the fundamental security model of WordPress installations.
The technical implementation of this vulnerability manifests through improper access control checks during re-embedding operations of stored Retrieval Augmented Generation documents. When authenticated users with subscriber-level permissions attempt to trigger document re-embedding processes, the plugin fails to verify their authorization status against the required administrative privileges. This oversight enables malicious actors to manipulate the rag_documents table directly, effectively bypassing the intended access controls that should restrict such operations to authorized administrators only. The vulnerability operates at the application level, exploiting weaknesses in the plugin's permission validation logic rather than targeting underlying WordPress core security mechanisms.
The operational impact of this authorization bypass extends beyond simple privilege escalation, as it directly affects the financial resources of site owners through unauthorized consumption of paid third-party AI API credits. Attackers can exploit this vulnerability to repeatedly trigger document re-embedding processes that utilize OpenAI, Gemini, OpenRouter, or xAI services, thereby depleting the site owner's allocated API credits without their knowledge or consent. This represents a significant financial risk for WordPress site administrators who rely on these services for their AI chatbot functionality, as the unauthorized usage can quickly exhaust credit balances and potentially result in service disruptions or additional billing charges.
The security implications of this vulnerability align with CWE-285, which addresses improper authorization issues in software applications, specifically targeting cases where access control mechanisms fail to properly validate user permissions. From an adversarial perspective, this flaw maps directly to ATT&CK technique T1078.004, which covers valid accounts used for unauthorized access, as attackers can leverage their existing subscriber-level accounts to perform administrative operations they should not be authorized to execute. The vulnerability's exploitation pathway demonstrates how insufficient input validation and access control checks create opportunities for privilege escalation within WordPress plugin ecosystems.
Mitigation strategies should prioritize immediate plugin updates to versions that address the authorization bypass flaw, as vendors typically release patches to resolve such security issues. Site administrators must implement additional monitoring of API usage patterns and credit consumption to detect unauthorized activities, while also ensuring proper user role management through WordPress's built-in capability. Network-level monitoring solutions can help identify unusual re-embedding operations that may indicate exploitation attempts, and regular security audits should verify that all installed plugins maintain current security standards. Organizations should also consider implementing rate limiting mechanisms for AI API calls and establishing clear access control policies that limit which user roles can initiate potentially costly operations within their WordPress installations.