CVE-2025-13947 is a vulnerability discovered in the WebKitGTK component utilized by Red Hat Enterprise Linux 6. The vulnerability stems from improper validation of drag-and-drop operations within the browser environment. Specifically, WebKitGTK fails to verify whether drag events originate externally or internally, allowing a remote attacker to craft malicious web content that, when interacted with by a user, can disclose any file that the user has permission to read on the local system. This is a user-assisted attack vector requiring the victim to perform a drag-and-drop action, but it does not require prior authentication, making it accessible to remote attackers. The vulnerability impacts confidentiality severely, as it can expose sensitive files without altering system integrity or availability. The CVSS 3.1 base score is 7.4, with vector AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N, indicating network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, high confidentiality impact, and no impact on integrity or availability. No known exploits have been reported in the wild, and no official patches have been linked yet, though remediation would likely involve updating WebKitGTK or applying vendor patches. The flaw is particularly concerning for environments where sensitive data is accessed via browsers on Red Hat Enterprise Linux 6 systems, as it could lead to unauthorized data disclosure through social engineering or malicious web content.

For European organizations, this vulnerability poses a significant risk to the confidentiality of sensitive information. Organizations in sectors such as finance, healthcare, government, and critical infrastructure that rely on Red Hat Enterprise Linux 6 and WebKitGTK for web browsing or application interfaces could have sensitive files exposed if users interact with malicious web content. The attack requires user interaction, which somewhat limits exploitation but does not eliminate risk, especially in environments where users may be targeted with phishing or social engineering campaigns. The vulnerability does not affect system integrity or availability, but the potential leakage of confidential data could lead to regulatory non-compliance (e.g., GDPR), reputational damage, and financial loss. Since Red Hat Enterprise Linux 6 is an older release, some organizations may still be using it in legacy systems, increasing their exposure. The lack of known exploits in the wild provides a window for proactive mitigation, but the high confidentiality impact necessitates urgent attention.

1. Immediately restrict or disable drag-and-drop functionality within browsers or applications using WebKitGTK on Red Hat Enterprise Linux 6 where feasible. 2. Monitor official Red Hat and WebKitGTK channels for patches or updates addressing CVE-2025-13947 and apply them promptly once available. 3. Implement strict user awareness training focused on the risks of interacting with untrusted web content and social engineering tactics that might trigger drag-and-drop actions. 4. Employ endpoint security solutions capable of detecting anomalous browser behaviors or suspicious drag-and-drop operations. 5. Consider upgrading affected systems to newer supported versions of Red Hat Enterprise Linux and WebKitGTK that do not contain this vulnerability. 6. Use application whitelisting and sandboxing to limit the ability of malicious web content to access local files. 7. Conduct regular audits of user permissions to ensure minimal file access rights, reducing the scope of files that could be disclosed.