CVE-2026-97280 in Review Schema Plugin
Summary
by MITRE • 10/01/2026
Missing Authorization vulnerability in Mamunur Rashid Review Schema review-schema allows Exploiting Incorrectly Configured Access Control Security Levels.
This issue affects Review Schema: 3.1.0.
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Analysis
by VulDB Data Team • 10/01/2026
The identified security flaw represents a critical failure in access control mechanisms within the Review Schema plugin, specifically affecting version 3.1.0 and potentially earlier iterations where similar architectural patterns are employed. This vulnerability is classified as Missing Authorization, which corresponds to CWE-862: Missing Authorization. In practical terms, this means that the application fails to properly verify whether an authenticated user has the necessary permissions to perform specific actions or access certain data resources. The core technical flaw lies in the server-side logic handling requests related to review management and schema configuration. When a client initiates a request to modify, delete, or view sensitive review metadata, the backend does not adequately validate that the requester is authorized for that specific operation based on their role or ownership of the resource. This oversight allows any authenticated user, regardless of their privilege level, to interact with administrative functions or other users' data without proper permission checks.
The exploitation of this vulnerability enables attackers to achieve Incorrectly Configured Access Control Security Levels, a concept closely aligned with MITRE ATT&CK technique T1078: Valid Accounts and potentially T1546: Event Triggered Execution if the modification leads to persistent backdoors or altered system behavior. An adversary can leverage this flaw by crafting specific HTTP requests that target endpoints responsible for managing review schemas. By manipulating parameters such as post IDs, user roles, or schema identifiers in these requests, an attacker can bypass intended restrictions. For instance, a standard subscriber-level account could potentially delete reviews created by administrators or modify the global schema settings that dictate how ratings are displayed across the entire website. This lack of vertical privilege escalation prevention undermines the fundamental security principle of least privilege, allowing low-privileged users to perform high-impact actions that should be restricted to site administrators or developers with elevated trust levels.
The operational impact of this vulnerability is significant for any WordPress installation relying on this plugin for structured data and review aggregation features. Beyond the immediate risk of unauthorized modification or deletion of content, which can lead to data integrity issues and loss of reputation metrics, there are broader implications for system stability and compliance. Attackers could use this access to inject malicious schema markup that affects search engine optimization results in unintended ways or disrupts the functionality of dependent plugins that rely on accurate review data. Furthermore, if sensitive user information is exposed through unauthorized read operations, it may violate privacy regulations such as GDPR or CCPA, leading to legal and reputational consequences for site owners. The ability to alter access control levels effectively neutralizes other security controls that depend on role-based restrictions, creating a cascading effect where subsequent defenses become ineffective due to the compromised foundation of identity verification.
Mitigation strategies must prioritize immediate remediation through software updates and configuration hardening. The most effective solution is to upgrade the Review Schema plugin to the latest patched version released by Mamunur Rashid, which should include fixes for these authorization checks. In environments where an update cannot be immediately applied due to compatibility concerns or operational constraints, temporary mitigations involve restricting access to administrative endpoints via web application firewalls that inspect request parameters for signs of unauthorized manipulation. Additionally, implementing strict server-side validation logic is crucial; developers must ensure that every action handler explicitly verifies the current user's role against a whitelist of allowed roles before proceeding with any state-changing operation. Regular security audits and penetration testing focused on access control flows can help identify similar gaps in other plugins or custom code within the WordPress ecosystem, ensuring a more robust defense-in-depth posture against privilege escalation attacks.