CVE-2025-43714 is a medium-severity vulnerability affecting the ChatGPT system as of March 30, 2025. The core issue arises from the system's handling of SVG (Scalable Vector Graphics) documents, which are rendered inline rather than being displayed as plain text within a code block or sanitized container. This inline rendering behavior enables HTML injection attacks within most modern graphical web browsers. Specifically, by embedding malicious HTML or script content inside SVG files, an attacker could exploit the rendering process to execute unauthorized code or manipulate the displayed content. The vulnerability is classified under CWE-77, which relates to improper neutralization of special elements used in a command (in this case, HTML elements), leading to injection flaws. The CVSS v3.1 base score is 6.5, indicating a medium severity level, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction needed (UI:N), unchanged scope (S:U), and limited impact on confidentiality and integrity (C:L, I:L), with no impact on availability (A:N). No known exploits are currently reported in the wild, and no patches or vendor-specific mitigations have been published yet. The vulnerability's presence in ChatGPT, a widely used AI conversational platform, raises concerns about the potential for HTML injection attacks that could lead to information disclosure or manipulation of user interactions within the browser context.

For European organizations, the impact of CVE-2025-43714 could be significant, particularly for those integrating ChatGPT or similar AI conversational tools into their workflows, customer service platforms, or internal communication systems. The HTML injection vulnerability could allow attackers to execute malicious scripts in the context of the user's browser session, potentially leading to unauthorized access to sensitive information, session hijacking, or manipulation of displayed content. Although the vulnerability does not directly affect system availability, the compromise of confidentiality and integrity could result in data breaches, reputational damage, and regulatory non-compliance under GDPR. Organizations relying on ChatGPT for processing or displaying user-generated content are at higher risk, especially if they do not implement additional content sanitization or isolation measures. The lack of required authentication or user interaction for exploitation increases the threat level, as attackers can potentially exploit this vulnerability remotely and without user consent. Given the widespread adoption of ChatGPT and similar AI tools across various sectors in Europe, including finance, healthcare, and public administration, the vulnerability could be leveraged in targeted attacks or broader phishing campaigns.

To mitigate the risks associated with CVE-2025-43714, European organizations should implement several specific measures beyond generic advice: 1) Avoid embedding or rendering SVG content directly within ChatGPT outputs or any AI-generated responses without prior sanitization. Use strict content security policies (CSP) to restrict the execution of inline scripts and control resource loading. 2) Employ robust input validation and output encoding on any user-supplied data that might be rendered as SVG or HTML to prevent injection of malicious code. 3) Where possible, configure ChatGPT integrations to render SVG content as plain text or within sandboxed iframes to isolate potentially harmful content from the main application context. 4) Monitor and audit AI-generated content for anomalous or suspicious SVG elements that could indicate exploitation attempts. 5) Educate end-users and administrators about the risks of interacting with untrusted SVG content and encourage cautious handling of AI-generated outputs containing graphical elements. 6) Stay updated with vendor advisories and apply patches or updates promptly once available. 7) Consider implementing browser-level mitigations such as disabling SVG script execution or using browser extensions that block inline script execution in SVGs.