CVE-2025-66112 identifies a missing authorization vulnerability in the WebToffee Accessibility Toolkit by WebYes, specifically affecting versions up to 2.0.4. This toolkit is designed to enhance website accessibility, often integrated into web platforms to assist users with disabilities. The vulnerability arises from incorrectly configured access control security levels, allowing an attacker with low privileges (PR:L) to bypass authorization checks and access data or functionality that should be restricted. The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) indicates the attack can be performed remotely over the network with low attack complexity, requires low privileges but no user interaction, and impacts confidentiality only, without affecting integrity or availability. The issue is due to missing or insufficient authorization enforcement on certain endpoints or features within the toolkit, potentially exposing sensitive information. No known exploits have been reported in the wild, and no official patches have been released yet. The vulnerability highlights the importance of proper access control mechanisms in web accessibility tools, which are increasingly mandated by regulations. Organizations using this toolkit should audit their deployments and prepare to apply fixes once available.

For European organizations, the primary impact is unauthorized disclosure of sensitive information due to missing authorization controls in a widely used accessibility toolkit. This could lead to exposure of user data or internal configuration details, undermining privacy and compliance with GDPR and other data protection laws. While the vulnerability does not affect system integrity or availability, the confidentiality breach could damage organizational reputation and result in regulatory penalties. Organizations heavily reliant on web accessibility tools to meet legal requirements may face operational risks if the vulnerability is exploited, potentially disrupting compliance audits or user trust. The medium severity rating reflects the limited scope of impact but acknowledges the ease of exploitation and the sensitive nature of data potentially exposed. Since no known exploits exist yet, the threat is currently theoretical but warrants proactive mitigation to avoid future exploitation.

1. Immediately audit all instances of the WebToffee Accessibility Toolkit to identify affected versions (<= 2.0.4). 2. Restrict access to the toolkit’s administrative and sensitive endpoints to authorized personnel only, implementing strict role-based access controls. 3. Monitor web server logs for unusual access patterns that may indicate attempts to exploit missing authorization. 4. Engage with the vendor (WebYes) to obtain or request patches addressing this vulnerability and apply them promptly once released. 5. If patches are not yet available, consider temporarily disabling or limiting the functionality of the toolkit features that require authorization until a fix is applied. 6. Conduct penetration testing focused on access control mechanisms within the toolkit to identify and remediate any additional authorization weaknesses. 7. Ensure that web application firewalls (WAFs) are configured to detect and block suspicious requests targeting the accessibility toolkit. 8. Educate IT and security teams about this vulnerability to maintain vigilance and rapid response capability.