CVE-2025-1461 is a medium severity Cross-Site Scripting (XSS) vulnerability identified in the Vuetify UI framework, specifically affecting the 'VCalendar' component's 'eventMoreText' property. Vuetify versions from 2.0.0 up to but not including 3.0.0 are impacted. The root cause lies in improper neutralization of input during web page generation (CWE-79). When the default Vuetify translator cannot find a translation key, it returns the key itself as the translation string. This behavior allows unsanitized HTML content to be injected into the page via the 'eventMoreText' property, enabling an attacker to execute arbitrary scripts in the context of the victim's browser. Since version 2.x of Vuetify is End-of-Life and no longer maintained, no official patches are available to remediate this issue. The vulnerability does not require user interaction or authentication but has a high attack complexity, as exploitation depends on the attacker’s ability to control or influence the 'eventMoreText' property value. The CVSS v3.1 base score is 5.6, reflecting a medium severity with limited confidentiality, integrity, and availability impacts. No known exploits are currently reported in the wild. This vulnerability primarily affects web applications using the vulnerable Vuetify versions, potentially exposing users to session hijacking, credential theft, or other malicious activities facilitated by XSS attacks.

For European organizations, this vulnerability poses a risk primarily to web applications built with Vuetify 2.x that incorporate the vulnerable 'VCalendar' component. Successful exploitation could lead to client-side script execution, enabling attackers to steal session cookies, perform actions on behalf of users, or deliver malicious payloads. This can compromise user data confidentiality and integrity, damage organizational reputation, and potentially lead to regulatory non-compliance under GDPR if personal data is exposed. The impact is heightened for organizations in sectors with high web application usage such as e-commerce, finance, healthcare, and government services. Since the vulnerability is in a UI framework, it may be present in multiple internal and customer-facing applications, increasing the attack surface. The lack of patches due to the EOL status of Vuetify 2.x complicates mitigation, potentially prolonging exposure. However, the medium severity and high attack complexity somewhat limit the immediacy of risk, but organizations should still prioritize remediation to prevent exploitation.

European organizations should undertake a thorough inventory of web applications using Vuetify 2.x and specifically the 'VCalendar' component. Immediate mitigation steps include: 1) Upgrading to Vuetify 3.x or later, which is actively maintained and not affected by this vulnerability. If upgrade is not feasible, consider refactoring to remove or replace the vulnerable component. 2) Implement strict input validation and output encoding on any user-controllable inputs that influence the 'eventMoreText' property to prevent injection of malicious HTML. 3) Employ Content Security Policy (CSP) headers to restrict script execution sources and reduce the impact of potential XSS attacks. 4) Use web application firewalls (WAFs) with rules targeting XSS patterns to detect and block exploit attempts. 5) Conduct security testing, including automated scanning and manual code review, focusing on UI components rendering dynamic content. 6) Educate developers on secure coding practices related to UI frameworks and translation mechanisms. These targeted actions go beyond generic advice by addressing the specific nature of the vulnerability and the challenges posed by the EOL status of the affected Vuetify versions.