CVE-2026-85587 in phpMyFAQ
Summary
by MITRE • 09/04/2026
phpMyFAQ before 4.1.8 enforces incorrect permission checks on admin content pages, allowing lesser-privileged editors to read draft and inactive content. Attackers with only add permissions can access news edit and FAQ translate endpoints to view unpublished content invisible to the public.
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Analysis
by VulDB Data Team • 09/04/2026
The vulnerability identified in phpMyFAQ versions prior to 4.1.8 represents a critical failure in server-side authorization logic, specifically classified under CWE-269 Improper Control of Interaction with Unintended Security Context. This flaw arises from an incorrect implementation of permission checks on administrative content pages within the application's backend interface. The core technical issue lies in the insufficient validation of user roles and privileges when processing requests to specific endpoints responsible for managing news items and FAQ translations. Instead of strictly enforcing role-based access control that restricts sensitive operations to administrators, the system allows users with significantly lower privilege levels, such as editors or contributors who possess only add permissions, to bypass these restrictions.
From a technical perspective, the vulnerability manifests when an authenticated user attempts to interact with endpoints designed for editing news articles and translating FAQ entries. These specific API routes do not adequately verify whether the requesting session holds the necessary administrative rights required to view draft states or inactive content. Consequently, any user account configured with basic creation privileges can successfully execute GET requests against these interfaces. The application fails to distinguish between public-facing data retrieval and internal management operations, thereby exposing sensitive operational data that is explicitly intended to remain hidden from non-administrative personnel until it has been reviewed and published by authorized staff.
The operational impact of this vulnerability is substantial for organizations relying on phpMyFAQ as their knowledge base solution. Attackers possessing even minimal user credentials can access unpublished drafts, internal notes, and inactive content entries that are not visible to the general public or standard users. This exposure compromises the confidentiality of sensitive information, including potential business strategies, unreleased product details, or confidential communication logs stored within draft articles. Furthermore, this flaw facilitates unauthorized data exfiltration without requiring privilege escalation exploits or authentication bypasses, as it relies entirely on a logical error in access control rather than a technical break-in method.
This behavior aligns with the MITRE ATT&CK framework technique T1078 Valid Accounts, where adversaries use legitimate credentials to gain initial access and maintain persistence within the system environment. By leveraging these valid but low-privileged accounts, an attacker can silently gather intelligence on internal processes and content workflows. The ability to view inactive or draft content may also aid in further reconnaissance efforts, potentially revealing structural weaknesses in how information is categorized or stored, which could inform subsequent attacks targeting more critical administrative functions if additional vulnerabilities exist within the same application layer.
To mitigate this risk, organizations running phpMyFAQ must immediately upgrade to version 4.1.8 or later, where these permission checks have been corrected to strictly enforce role-based access controls on all administrative endpoints. Until an update can be applied, administrators should review user account permissions and ensure that no non-administrative users are granted unnecessary privileges within the content management system. Additionally, implementing a Web Application Firewall with rules targeting specific endpoint patterns associated with news editing and FAQ translation may provide temporary protection by blocking unauthorized access attempts from lower-privileged sessions while patching efforts are underway. Regular security audits of authentication and authorization logic across all administrative interfaces are recommended to prevent similar logical flaws in the future.