CVE-2025-52777 is a high-severity reflected Cross-Site Scripting (XSS) vulnerability identified in the cmsMinds Pay with Contact Form 7 plugin, affecting versions up to 1.0.4. The vulnerability stems from improper neutralization of user-supplied input during web page generation, classified under CWE-79. Specifically, the plugin fails to adequately sanitize or encode input parameters before reflecting them back in HTTP responses, enabling attackers to inject malicious scripts. When a victim interacts with a crafted URL or form input, the injected script executes in the victim's browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The CVSS 3.1 base score of 7.1 reflects a high severity, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is changed (S:C), indicating that exploitation can affect components beyond the vulnerable plugin, impacting confidentiality, integrity, and availability at a low level. No known exploits are currently reported in the wild, and no patches have been published yet. The vulnerability was publicly disclosed on July 16, 2025, with the initial reservation date on June 19, 2025. Given the plugin's integration with Contact Form 7, a widely used WordPress form plugin, the vulnerability could be present on numerous WordPress sites utilizing this payment extension, especially those processing payments or sensitive user data through forms.

For European organizations, this vulnerability poses significant risks, particularly for e-commerce, financial services, and any entities relying on WordPress sites with the Pay with Contact Form 7 plugin. Successful exploitation could lead to theft of user credentials, session tokens, or payment information, undermining customer trust and potentially violating GDPR requirements concerning data protection and breach notification. The reflected XSS could also facilitate phishing attacks by injecting deceptive content or redirecting users to malicious sites. Additionally, integrity of transactional data could be compromised, leading to fraudulent transactions or unauthorized access. The availability impact is lower but possible if attackers leverage the vulnerability to execute scripts that disrupt normal site operations or cause denial of service. Given the plugin’s role in payment processing, even limited exploitation could have outsized financial and reputational consequences. Organizations in Europe must consider the regulatory implications of data breaches resulting from such vulnerabilities, including fines and legal actions.

Organizations should immediately audit their WordPress installations to identify the presence of the cmsMinds Pay with Contact Form 7 plugin, especially versions up to 1.0.4. Until an official patch is released, apply the following mitigations: 1) Implement Web Application Firewall (WAF) rules to detect and block reflected XSS attack patterns targeting form inputs and URL parameters associated with the plugin. 2) Employ Content Security Policy (CSP) headers to restrict script execution sources, reducing the impact of injected scripts. 3) Sanitize and validate all user inputs at the application level, possibly by customizing or extending the plugin code to enforce stricter input handling if feasible. 4) Educate users and administrators about the risks of clicking suspicious links related to the affected forms. 5) Monitor web server logs for unusual request patterns indicative of XSS exploitation attempts. 6) Plan for rapid deployment of patches once available from the vendor. 7) Consider temporarily disabling the plugin or replacing it with alternative payment solutions if risk tolerance is low and patching is delayed.