CVE-2026-62137 in bbPress Plugin
Summary
by MITRE • 09/11/2026
Unauthenticated Sensitive Data Exposure in bbPress <= 2.6.14 versions.
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Analysis
by VulDB Data Team • 09/11/2026
The vulnerability identified within bbPress versions prior to or equal to 2.6.14 represents a critical failure in access control mechanisms, specifically categorized under the Common Weakness Enumeration as CWE-200: Information Exposure. This flaw allows unauthenticated users to retrieve sensitive data that should be restricted to authorized administrators or specific user roles. In the context of WordPress-based forums, bbPress manages community discussions and stores various metadata associated with topics, replies, and user interactions. The security lapse occurs because certain API endpoints or database queries do not adequately verify the authentication status of the requesting party before returning results containing private information.
Technically, this issue stems from insufficient input validation and authorization checks within the plugin's core functions that handle data retrieval for forum elements. When an attacker sends a crafted request to these vulnerable endpoints, the application processes it without confirming whether the requester has valid credentials or appropriate permissions. This lack of enforcement enables remote attackers to extract details such as private topic content, user email addresses associated with posts, or other metadata intended for internal use only. The vulnerability is particularly dangerous because it requires no prior authentication, making it easily exploitable by any internet user without needing to bypass login screens or exploit session management flaws.
The operational impact of this information exposure can be severe depending on the sensitivity of the data stored within the forum. Exposed email addresses and usernames facilitate targeted phishing campaigns known as spear-phishing, where attackers use legitimate-looking communications tailored to specific individuals based on their public profile information. Furthermore, if private discussions containing confidential business strategies or personal identifiers are leaked, it constitutes a direct breach of privacy regulations such as GDPR in Europe or CCPA in California. The availability of this data also aids reconnaissance efforts for subsequent attacks, allowing adversaries to map out the user base and identify high-value targets within the community structure.
To mitigate this risk, administrators must upgrade bbPress immediately to version 2.6.15 or later, where these access control checks have been reinforced. It is imperative to verify that all plugins are updated to their latest stable releases to ensure compatibility with current security patches and WordPress core updates. Additionally, implementing a Web Application Firewall can provide an additional layer of defense by filtering malicious requests before they reach the application logic. Regular audits of forum settings should be conducted to minimize the amount of sensitive data exposed publicly, such as disabling public visibility for user profiles if not strictly necessary. Monitoring server logs for unusual access patterns to API endpoints can also help in detecting potential exploitation attempts early. This vulnerability aligns with MITRE ATT&CK technique T1005: Data from Local System, highlighting how attackers leverage software flaws to gather intelligence without direct interaction or authentication.