CVE-2026-86448 in LearnPress Plugin
Summary
by MITRE • 09/16/2026
The LearnPress WordPress plugin before 4.4.7 does not perform any authentication, capability or nonce check before serving a previously generated order export file, allowing unauthenticated attackers who can determine its identifier to download customer names, purchases, amounts and guest email addresses.
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Analysis
by VulDB Data Team • 09/16/2026
The vulnerability identified in the LearnPress WordPress plugin prior to version 4.4.7 represents a critical failure in access control mechanisms within an e-learning platform that frequently handles sensitive student data. The core technical flaw lies in the absence of authentication checks, capability validations, and nonce verification when serving previously generated order export files. In secure web application design, any endpoint responsible for delivering sensitive information must verify that the requesting user is authenticated and possesses the necessary permissions to access such resources. Furthermore, nonces are typically employed to prevent Cross-Site Request Forgery attacks by ensuring that requests originate from legitimate users interacting with the site interface rather than external malicious actors. The lack of these security controls means that the server blindly trusts any request for an export file based solely on its identifier, without confirming the identity or intent of the requester.
This architectural deficiency allows unauthenticated attackers to exploit the system by determining the unique identifiers associated with order exports and directly downloading them via simple HTTP requests. Once an attacker obtains these identifiers, which may be discoverable through enumeration techniques or leaked in other parts of the application, they can retrieve files containing highly sensitive customer information. The data exposed includes full names, details of purchases made, transaction amounts, and guest email addresses. This constitutes a severe breach of confidentiality, as it exposes personally identifiable information that users reasonably expect to remain private within their account records or purchase histories.
The operational impact of this vulnerability is significant for both the website administrators and the end-users whose data is compromised. For site owners, the exposure of customer data can lead to substantial reputational damage, legal liabilities under regulations such as GDPR or CCPA, and potential financial penalties. For customers, the leakage of email addresses combined with purchase history facilitates targeted phishing campaigns, social engineering attacks, and spamming activities. Attackers can use this enriched profile information to craft convincing fraudulent messages that appear legitimate because they reference real transactions and personal details known only to the victim. This significantly increases the success rate of subsequent credential harvesting or financial fraud attempts against the affected user base.
From a classification perspective, this vulnerability aligns with CWE-284, which describes Improper Access Control, specifically reflecting a failure to enforce proper restrictions on unauthenticated users. It also maps closely to ATT&CK technique T1530, Data from Local System Retrieval, as the attacker is extracting stored data that they are not authorized to view. Additionally, the lack of nonce verification relates to CWE-352, Cross-Site Request Forgery, although in this specific context, the primary issue is unauthorized access rather than forced actions. The vulnerability highlights a common oversight in plugin development where convenience or performance optimizations inadvertently strip away essential security layers designed to protect user privacy and data integrity.
To mitigate this risk, immediate action must be taken by upgrading the LearnPress plugin to version 4.4.7 or later, which addresses these access control deficiencies. Until an upgrade is possible, administrators should implement temporary compensating controls such as restricting direct file access via web server configuration rules that require authentication for specific directories containing export files. It is also advisable to review and rotate any exposed credentials if there is suspicion of data exfiltration. Long-term mitigation involves adopting a security-first development mindset where all endpoints handling sensitive data undergo rigorous testing against common vulnerability classes like broken object level authorization. Regular security audits and the use of automated scanning tools can help identify similar gaps in other plugins or custom code, ensuring that access controls are consistently enforced across the entire application ecosystem to protect user trust and regulatory compliance.