CVE-2024-39853 identifies a prototype pollution vulnerability in the ratio-swiper 0.0.2 JavaScript library, specifically in its parse function. Prototype pollution occurs when an attacker manipulates the prototype of a base object, such as Object.prototype, by injecting or modifying properties, which then affect all objects inheriting from that prototype. This can lead to unexpected behavior, including arbitrary code execution or Denial of Service (DoS). The vulnerability allows attackers to inject arbitrary properties without authentication or user interaction, making remote exploitation feasible. The CVSS 3.1 base score is 6.5, reflecting a medium severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The impact affects confidentiality and integrity, as attackers can manipulate application logic or data, but availability impact is low. No patches or known exploits are currently available, indicating the vulnerability is newly disclosed. The weakness is categorized under CWE-1321, which relates to improper handling of prototype pollution in JavaScript. This vulnerability is critical for developers and organizations relying on ratio-swiper 0.0.2, as it can compromise application security and stability.

The vulnerability allows attackers to manipulate JavaScript object prototypes, potentially leading to arbitrary code execution or Denial of Service. This can compromise the confidentiality and integrity of affected applications by enabling attackers to alter application logic, bypass security controls, or inject malicious code. While availability impact is low, successful exploitation could disrupt service functionality. Organizations using ratio-swiper 0.0.2 in web applications, especially those processing untrusted input, face increased risk of exploitation. The lack of authentication and user interaction requirements broadens the attack surface, allowing remote attackers to exploit the vulnerability easily. This could lead to data breaches, unauthorized access, or application crashes, impacting business operations and user trust.

1. Immediately audit and review all usage of ratio-swiper 0.0.2 in your codebase, especially the parse function or any code handling untrusted input. 2. Implement strict input validation and sanitization to prevent injection of malicious properties into objects. 3. Use Object.freeze() or Object.seal() on critical prototypes to prevent modification where feasible. 4. Employ security-focused static analysis tools to detect prototype pollution patterns in your code. 5. Monitor application logs and behavior for anomalies indicative of prototype pollution exploitation attempts. 6. Consider isolating or sandboxing components using ratio-swiper to limit the impact of potential exploitation. 7. Stay updated with vendor advisories and apply patches or upgrades once available. 8. If feasible, replace ratio-swiper 0.0.2 with a more secure or updated library version that addresses this vulnerability. 9. Educate developers about prototype pollution risks and secure coding practices related to JavaScript object manipulation.