CVE-2026-10755 in All in One SEO Plugin
Summary
by MITRE • 07/20/2026
The All in One SEO WordPress plugin before 4.9.9 does not correctly restrict access to some of its AI integration REST API endpoints, allowing users with low-level privileges such as Contributors to overwrite or reset the site-wide AI integration state.
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Analysis
by VulDB Data Team • 07/20/2026
The vulnerability exists within the All in One SEO WordPress plugin version 4.9.8 and earlier, where insufficient access controls are implemented for specific AI integration REST API endpoints. This flaw allows users with minimal privileges, particularly contributors who typically have limited capabilities within WordPress, to exploit the system and manipulate critical site-wide AI integration settings. The issue stems from improper authorization checks that fail to verify whether the requesting user possesses sufficient permissions to modify core system configurations.
The technical implementation of this vulnerability involves the REST API endpoints designed for AI integration management lacking proper capability checks before executing destructive operations such as overwriting or resetting the entire site-wide AI integration state. WordPress security model relies on role-based access control where contributors should only have permission to publish posts and manage their own content, yet this plugin fails to enforce these boundaries for its AI-related API endpoints. The flaw represents a classic privilege escalation vulnerability that violates the principle of least privilege as defined in cybersecurity best practices.
The operational impact of this vulnerability is significant as it enables malicious actors or compromised contributor accounts to disrupt AI-powered SEO functionality across an entire website. An attacker could reset AI integration settings, potentially causing automated SEO optimizations to cease functioning, or overwrite configurations with malicious values that could degrade site performance or compromise security. This type of vulnerability directly affects the availability and integrity of the website's AI-driven features, which may be critical for content management and search engine optimization workflows.
This vulnerability aligns with CWE-284 Access Control Issues, specifically focusing on inadequate access control mechanisms for API endpoints within a web application. The issue also maps to ATT&CK technique T1078 Valid Accounts, as it exploits legitimate user accounts with lower privileges to gain unauthorized access to system-level functions. Additionally, the vulnerability demonstrates characteristics of T1566 Impersonation and T1499 Endpoint Denial of Service, as successful exploitation could result in disruption of AI-powered services and potential service degradation.
The recommended mitigation strategy involves immediate upgrade to All in One SEO plugin version 4.9.9 or later, which includes proper access control restrictions for the affected API endpoints. Administrators should also implement additional security measures such as restricting API access through firewall rules, monitoring unauthorized API calls, and conducting regular security audits of WordPress plugins. Organizations should review their user role assignments to ensure that contributors do not have unnecessary capabilities, and consider implementing more granular permission controls using WordPress capabilities or third-party security plugins to further reduce attack surface exposure.