CVE-2026-62033 in uListing Plugin
Summary
by MITRE • 10/10/2026
Subscriber Settings Change in uListing <= 2.2.0 versions.
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Analysis
by VulDB Data Team • 10/10/2026
The vulnerability identified as Subscriber Settings Change in the WordPress plugin uListing prior to version 2.2.0 represents a critical authorization flaw that allows unauthenticated attackers to modify subscriber account configurations without proper verification of user privileges. This issue stems from insufficient access control mechanisms within the plugin's administrative endpoints, which fail to adequately validate whether the requesting user has the necessary permissions to alter settings associated with other subscribers or their own profile in an unintended manner. In many WordPress environments, such functionality is typically restricted to administrators or users with specific role capabilities, but the flaw bypasses these checks by exploiting missing server-side validation logic during request processing.
From a technical perspective, this vulnerability aligns closely with CWE-284 Improper Access Control and CWE-613 Insufficient Session Expiration, as it involves the manipulation of session-based or state-changing operations without adequate authentication verification. The attacker can exploit this by crafting specific HTTP requests that target internal API endpoints used for updating subscriber details such as email addresses, passwords, or subscription statuses. Because these actions are performed without requiring valid credentials or token validation beyond what is normally expected for public-facing forms, the system treats unauthorized modifications as legitimate administrative tasks. This lack of strict role-based access control enables privilege escalation scenarios where lower-privileged users can assume higher-level capabilities or disrupt service availability by altering critical account parameters.
The operational impact of this vulnerability extends beyond simple data modification, potentially leading to complete compromise of subscriber accounts and subsequent lateral movement within the WordPress ecosystem. Attackers may use this flaw to reset passwords for high-value administrative accounts if those subscribers hold elevated roles, thereby gaining full control over the website's content management system. Additionally, malicious actors could disable subscription services or alter billing information, resulting in financial loss for both site owners and legitimate users. The ability to change subscriber settings also facilitates phishing campaigns by allowing attackers to modify email addresses associated with victim accounts, enabling them to intercept recovery emails or send fraudulent communications under the guise of trusted platform notifications.
Mitigation strategies must prioritize immediate updates to uListing version 2.2.0 or later, where these access control issues have been addressed through enhanced validation routines and stricter permission checks on all subscriber-related endpoints. Administrators should also implement web application firewalls configured with rulesets that detect anomalous POST requests targeting user management functions, particularly those originating from untrusted sources. Regular auditing of plugin code for proper implementation of WordPress nonces and capability checks is essential to prevent similar flaws in future updates. Furthermore, enforcing multi-factor authentication on all administrative accounts adds a critical layer of defense against credential-based attacks that might follow successful exploitation of this vulnerability. Monitoring logs for unusual patterns in subscriber data changes can help detect ongoing attempts at unauthorized modification before significant damage occurs.