Prototype Pollution in json-logic-js

Description

Versions of json-logic-js prior to 2.0.0 are vulnerable to Prototype Pollution. The method operation allows a malicious user to modify the prototype of Object through the method property name. This causes modification of any existing property that will exist on all objects and leads to Remote Code Execution.

Recommendation

Update the json-logic-js package to the latest compatible version. Followings are version details:

• Affected version(s): < 2.0.0
• Patched version(s): 2.0.0

References

• GHSA-m9hw-7xfv-wqg7
• www.npmjs.com
• CWE-471
• OWASP 2021-A3

Related Issues

• tRPC 11 WebSocket DoS Vulnerability - CVE-2025-43855
• DocsGPT Allows Remote Code Execution - CVE-2025-0868
• Signature Malleabillity in elliptic - CVE-2020-13822
• json-logic-js Command Injection vulnerability - CVE-2021-4329

Tags:

npm

json-logic-js