CVE-2025-14394 in Popover Windows Plugin
Summary
by MITRE • 12/13/2025
The Popover Windows plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.2. This is due to missing or incorrect nonce validation. This makes it possible for unauthenticated attackers to update the plugin's settings 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 • 12/13/2025
The vulnerability identified as CVE-2025-14394 affects the Popover Windows plugin for WordPress, specifically targeting versions up to and including 1.2. This represents a critical security flaw that undermines the integrity of the plugin's administrative functions and exposes WordPress sites to potential compromise. The vulnerability stems from insufficient security measures that fail to properly validate user requests, creating an avenue for malicious actors to manipulate plugin settings without proper authorization. The issue is particularly concerning as it affects a widely used plugin that likely handles various user interface elements and administrative configurations within WordPress environments.
The technical flaw manifests through the absence of proper nonce validation mechanisms within the plugin's request handling process. Nonces serve as critical security tokens that verify the authenticity of requests and prevent unauthorized modifications to system settings. In this case, the plugin fails to implement or correctly implement nonce checks that would normally validate that administrative actions originate from legitimate sources. This omission creates a pathway for cross-site request forgery attacks where attackers can craft malicious requests that appear to come from authenticated administrators. The vulnerability operates at the application level and specifically targets the plugin's configuration management functionality, allowing attackers to modify settings through forged HTTP requests.
The operational impact of this vulnerability extends beyond simple configuration changes, potentially enabling attackers to manipulate user experience elements, alter plugin behavior, and potentially create persistent access points within the WordPress environment. When combined with social engineering techniques, particularly those involving phishing or malicious link delivery, the vulnerability becomes significantly more dangerous as it allows attackers to exploit administrator trust and unwittingly perform malicious actions. The fact that this affects unauthenticated attackers means that no prior access or credentials are required to attempt exploitation, making the vulnerability particularly attractive to threat actors. This type of vulnerability directly relates to CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in software applications.
Mitigation strategies for this vulnerability require immediate action from WordPress site administrators, including updating to the latest version of the Popover Windows plugin where the nonce validation issue has been addressed. Organizations should also implement additional security layers such as web application firewalls that can detect and block suspicious requests, and conduct regular security audits of installed plugins to identify similar vulnerabilities. The ATT&CK framework categorizes this type of vulnerability under T1566, which deals with credential harvesting through social engineering, as attackers leverage the forged request mechanism to manipulate administrative functions. Regular security monitoring and patch management procedures should be enforced to prevent exploitation of similar vulnerabilities in other plugins or core WordPress components. The vulnerability highlights the importance of proper input validation and authentication mechanisms in web applications, particularly those handling administrative functions.