CVE-2023-4276 in Absolute Privacy Plugin
Summary
by MITRE • 08/10/2023
The Absolute Privacy plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.1. This is due to missing nonce validation on the 'abpr_profileShortcode' function. This makes it possible for unauthenticated attackers to change user email and password via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 04/10/2026
The Absolute Privacy plugin for WordPress presents a critical cross-site request forgery vulnerability that affects versions up to and including 2.1. This weakness fundamentally undermines the security posture of WordPress installations that rely on this plugin for privacy management. The vulnerability stems from inadequate input validation mechanisms within the plugin's core functionality, specifically within the abpr_profileShortcode function. The absence of proper nonce validation creates a pathway for malicious actors to manipulate user account details without authentication. This type of vulnerability falls under the CWE-352 category, which specifically addresses cross-site request forgery conditions in web applications. The ATT&CK framework categorizes this as a privilege escalation technique, as attackers can leverage this weakness to modify user credentials and potentially gain unauthorized access to accounts. The vulnerability is particularly concerning because it requires no authentication from the attacker, making it an attractive target for automated exploitation campaigns. The attack vector relies on social engineering tactics where administrators are tricked into clicking malicious links or visiting compromised websites that trigger the forged requests.
The technical implementation flaw occurs when the abpr_profileShortcode function processes user requests without validating the authenticity of the originating request through nonce verification. This validation mechanism is essential for ensuring that requests are genuinely initiated by authenticated users and not fabricated by malicious third parties. When nonce validation is absent, the plugin fails to distinguish between legitimate administrative actions and forged requests that appear to come from the same source. The vulnerability allows attackers to modify critical user account information including email addresses and passwords, effectively enabling account takeover scenarios. This weakness creates a persistent threat surface where even a single compromised administrator session could result in widespread account compromise across the affected WordPress installation. The lack of proper request validation means that any user with access to the plugin's functionality can be targeted, regardless of their authentication status. The vulnerability's impact is amplified by the fact that many WordPress administrators may not be aware of the specific plugin's security posture, making them more susceptible to social engineering attacks that exploit this weakness.
The operational impact of this vulnerability extends beyond simple credential theft to encompass potential data breaches, service disruption, and reputational damage for affected organizations. Attackers can leverage this vulnerability to silently modify user accounts, potentially creating backdoor access points or redirecting user communications to malicious endpoints. The compromise of user email addresses and passwords can lead to cascading security issues, especially in environments where users reuse credentials across multiple systems. Organizations may experience unauthorized access to sensitive data, loss of user trust, and potential regulatory compliance violations depending on the nature of the affected data. The vulnerability's exploitation requires minimal technical skill from attackers, making it particularly dangerous in environments with less security-aware administrators. The attack can be executed through various vectors including phishing emails, compromised websites, or even through social media platforms where administrators might be tricked into clicking malicious links. The persistent nature of this vulnerability means that once exploited, the compromised accounts can remain active until manually detected and addressed, potentially allowing for extended periods of unauthorized access.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The most critical action is to upgrade to a patched version of the Absolute Privacy plugin, which should include proper nonce validation mechanisms. Organizations should also implement additional security layers including web application firewalls that can detect and block suspicious request patterns. Regular security audits of installed plugins should be conducted to identify similar vulnerabilities in other third-party components. Network monitoring solutions should be configured to detect unusual credential modification patterns that might indicate exploitation attempts. Administrators should be trained to recognize social engineering attempts and verify the authenticity of links before clicking. The implementation of multi-factor authentication for administrative accounts provides additional protection layers that can mitigate the impact of credential compromise. Security teams should also consider implementing automated scanning tools that can detect vulnerable plugin versions across their infrastructure and generate alerts for immediate remediation. Organizations should establish incident response procedures specifically designed to handle credential compromise scenarios and ensure that administrators are trained in proper recovery procedures. The vulnerability underscores the importance of maintaining up-to-date security practices and the need for comprehensive security awareness training to prevent successful exploitation attempts.