CVE-2024-30461 is a DOM-based Cross-site Scripting (XSS) vulnerability classified under CWE-79, affecting Tumult Inc's Tumult Hype Animations software versions up to 1.9.11. This vulnerability occurs due to improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be injected and executed in the context of the victim's browser. The flaw is client-side, meaning the malicious payload is executed within the Document Object Model (DOM) environment of the user's browser, often triggered by crafted URLs or manipulated inputs that the animation software fails to sanitize properly. The CVSS 3.1 score of 7.1 reflects a high severity, with an attack vector of network (remote), low attack complexity, no privileges required, but user interaction needed. The scope is changed, indicating that exploitation can affect components beyond the initially vulnerable software, potentially impacting the confidentiality, integrity, and availability of user data and sessions. While no public exploits have been reported yet, the vulnerability poses a significant risk for web applications or interactive media relying on Tumult Hype Animations, as attackers can leverage it to steal session tokens, perform actions on behalf of users, or deface content. The lack of available patches at the time of reporting necessitates immediate attention to mitigation strategies.

For European organizations, the impact of CVE-2024-30461 can be substantial, especially for those involved in digital marketing, media production, e-learning, and interactive web content development that utilize Tumult Hype Animations. Successful exploitation can lead to unauthorized access to user sessions, theft of sensitive information, manipulation of displayed content, and potential spread of malware through injected scripts. This can damage organizational reputation, lead to regulatory non-compliance under GDPR due to data breaches, and cause operational disruptions. Given the cross-site nature of the attack, users interacting with affected web content are at risk, which can extend the impact to customers and partners. The vulnerability's exploitation does not require authentication but does require user interaction, which means phishing or social engineering could be used to trigger attacks. The changed scope of the vulnerability suggests that the attack could affect other integrated systems or services relying on the animations, amplifying the potential damage.

European organizations should implement several specific mitigation measures beyond generic advice: 1) Immediately audit all web content and applications using Tumult Hype Animations to identify affected versions and usage contexts. 2) Apply vendor patches or updates as soon as they become available; if patches are not yet released, consider temporarily disabling or replacing vulnerable animations. 3) Implement strict input validation and output encoding on all user-controllable inputs that interact with the animations to prevent injection of malicious scripts. 4) Deploy Content Security Policy (CSP) headers tailored to restrict script sources and prevent execution of unauthorized scripts. 5) Educate users and administrators about the risks of interacting with suspicious links or content that could trigger the XSS vulnerability. 6) Monitor web traffic and logs for unusual activity indicative of exploitation attempts. 7) Consider using web application firewalls (WAFs) with custom rules to detect and block XSS payloads targeting this vulnerability. 8) Review and enhance incident response plans to quickly address any exploitation events related to this vulnerability.