carboneio carbone Formatter input.js 原型污染

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.

Applications utilizing the carbone library in their frontend or backend code are at risk. Specifically, projects that dynamically construct objects based on user-supplied data without proper sanitization are particularly vulnerable. Developers relying on older versions of carbone without robust input validation practices should prioritize upgrading.

• nodejs / server:

  npm list carbone

• nodejs / server:

  npm audit

• nodejs / server:

  grep -r 'lib/input.js' .  # Search for the vulnerable file

1. 2026-01-07Disclosure

   disclosure

1. 已保留2026-01-04
2. 发布日期2026-01-07
3. 修改日期2026-02-23
4. EPSS 更新日期2026-03-23

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.