CVE-2025-63005 identifies a Stored Cross-site Scripting (XSS) vulnerability in the Tomas WordPress Tooltips plugin, versions up to 10.7.9. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, classified under CWE-79. Stored XSS occurs when malicious scripts injected by an attacker are permanently stored on the target server and executed in the browsers of users who visit the affected pages. In this case, attackers with low privileges (PR:L) can inject malicious payloads that require user interaction (UI:R) to trigger, potentially affecting confidentiality, integrity, and availability (C:L/I:L/A:L) of the site. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. No patches or known exploits are currently available, but the vulnerability is publicly disclosed and should be addressed proactively. The Tomas WordPress Tooltips plugin is used to enhance user experience by displaying tooltips, and its widespread use in WordPress sites makes this vulnerability relevant to many organizations. Attackers exploiting this flaw could steal session cookies, perform actions on behalf of users, or deface websites, leading to reputational damage and potential data breaches.

For European organizations, the impact of CVE-2025-63005 can be significant, especially for those relying on WordPress sites with the Tomas Tooltips plugin installed. Exploitation could lead to unauthorized access to user sessions, theft of sensitive information, and manipulation of website content. This can undermine user trust, cause regulatory compliance issues under GDPR due to potential data leakage, and disrupt business operations. Public-facing websites of e-commerce, government, healthcare, and financial sectors are particularly at risk. The requirement for user interaction limits automated exploitation but does not eliminate risk, as phishing or social engineering can facilitate triggering the vulnerability. The medium CVSS score reflects moderate risk, but the broad use of WordPress in Europe and the plugin’s functionality increase the potential attack surface. Organizations may face reputational damage and financial losses if exploited, especially if attackers leverage the vulnerability to escalate privileges or pivot to other internal systems.

1. Monitor for and apply official patches or updates from the Tomas WordPress Tooltips plugin vendor as soon as they are released. 2. If patches are not yet available, consider disabling or uninstalling the plugin temporarily to eliminate exposure. 3. Implement strict input validation and sanitization on all user inputs related to tooltips or any dynamic content generation. 4. Deploy Content Security Policy (CSP) headers to restrict execution of unauthorized scripts and reduce XSS impact. 5. Use Web Application Firewalls (WAFs) with rules targeting common XSS payloads to detect and block exploitation attempts. 6. Educate users and administrators about phishing and social engineering risks that could trigger user interaction-based exploits. 7. Regularly audit WordPress plugins and themes for vulnerabilities and remove unused or outdated components. 8. Employ security plugins that can detect and mitigate XSS attacks within WordPress environments. 9. Conduct penetration testing focused on XSS vulnerabilities to identify and remediate similar issues proactively. 10. Maintain comprehensive logging and monitoring to detect suspicious activities related to this vulnerability.