CVE-2025-66064 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the WordPress plugin 'Giveaways and Contests by RafflePress' developed by Syed Balkhi. This plugin is widely used to create and manage giveaways and contests on WordPress sites. The vulnerability exists in versions up to and including 1.12.20, allowing an attacker to craft malicious web requests that, when visited by an authenticated user (typically an administrator), cause unintended actions to be executed within the plugin. CSRF attacks exploit the trust a web application places in the user's browser by leveraging the user's authenticated session to perform state-changing operations without their consent. In this case, an attacker could manipulate giveaway settings, alter contest entries, or disrupt promotional campaigns, potentially leading to reputational damage or loss of customer trust. The vulnerability does not require the attacker to have direct access to the victim's credentials but relies on the victim being logged into the WordPress admin interface and visiting a malicious page. No public exploits have been reported yet, and no official patches or CVSS scores are currently available. The absence of anti-CSRF tokens or insufficient validation of request origins in the plugin likely contributes to this vulnerability. Organizations using this plugin should be aware of the risk, especially those relying on giveaways for marketing or customer engagement.

For European organizations, the impact of this CSRF vulnerability can be significant, particularly for those heavily reliant on WordPress-based marketing tools. Successful exploitation can compromise the integrity of promotional campaigns by allowing unauthorized modification or disruption of giveaways and contests. This could lead to loss of customer trust, brand reputation damage, and potential financial losses if giveaways are manipulated or invalidated. Additionally, if the plugin is integrated with other systems (e.g., CRM or email marketing platforms), unauthorized changes could cascade, affecting broader business processes. While the vulnerability does not directly expose sensitive data or cause denial of service, the indirect consequences on business operations and customer relations can be substantial. European organizations must consider compliance with data protection regulations such as GDPR, as unauthorized manipulation of user engagement data could raise legal concerns. The lack of known exploits reduces immediate risk, but the potential for targeted attacks remains, especially in competitive sectors or politically sensitive environments.

To mitigate this vulnerability, organizations should: 1) Monitor for and promptly apply official patches or updates from the plugin vendor once released. 2) Implement web application firewalls (WAFs) with rules to detect and block CSRF attack patterns targeting the plugin endpoints. 3) Restrict administrative access to the WordPress backend using IP whitelisting or VPNs to reduce exposure. 4) Enforce multi-factor authentication (MFA) for WordPress admin accounts to limit the risk of session hijacking. 5) Educate administrators and users about the risks of clicking unknown links while logged into sensitive systems. 6) Review and harden WordPress security configurations, including disabling unused plugins and limiting user privileges. 7) Consider adding custom anti-CSRF tokens or nonce verification in plugin requests if feasible. 8) Regularly audit logs for suspicious activity related to giveaway or contest management. These measures go beyond generic advice by focusing on layered defenses specific to WordPress administrative environments and the nature of CSRF attacks.