CVE-2024-14020: Prototype Pollution in carbone

Successful exploitation of CVE-2024-14020 allows a remote attacker to modify the prototype of JavaScript objects within the carbone library. This can lead to unexpected application behavior, potentially including denial of service, data corruption, or even arbitrary code execution depending on how the application utilizes the modified prototypes. The high complexity suggests that exploitation requires a deep understanding of the application's internal workings and the prototype inheritance mechanism. Prototype pollution vulnerabilities, while often overlooked, can have significant consequences if exploited effectively, as they can bypass security controls and compromise the integrity of the application.

1. Reserved2026-01-04
2. Published2026-01-07
3. Modified2026-02-23
4. EPSS updated2026-03-23

The primary mitigation for CVE-2024-14020 is to upgrade to version 3.5.6 of carbone. This version includes a patch (04f9feb24bfca23567706392f9ad2c53bbe4134e) that addresses the prototype pollution vulnerability. If upgrading immediately is not feasible, consider implementing input validation and sanitization techniques to prevent malicious data from being injected into the application. Carefully review and restrict the use of user-supplied data in object property assignments. After upgrading, confirm the fix by attempting to trigger the vulnerable code path with malicious input and verifying that the prototype remains unchanged.