Prototype Pollution in mithril

Description

Affected versions of mithrilare vulnerable to prototype pollution. The function parseQueryString may allow a malicious user to modify the prototype of Object, causing the addition or modification of an existing property that will exist on all objects.

Recommendation

Update the mithril package to the latest compatible version. Followings are version details:

• Affected version(s): **>= 2.0.0, < 2.0.2

  < 1.1.7**

• Patched version(s): **2.0.2

  1.1.7**

References

• GHSA-c3px-v9c7-m734
• www.npmjs.com
• CWE-1321

Related Issues

• Lodash has Prototype Pollution Vulnerability in `_.unset` and `_.omit` functions - CVE-2025-13465
• Prototype Pollution in json-logic-js - Vulnerability
• Prototype pollution vulnerability found in Mermaid's bundled version of DOMPurify - Vulnerability
• Prototype Pollution in unflatten - Vulnerability

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How to Secure your NodeJs Express Javascript Application - part 1

How to Secure your NodeJs Express Javascript Application - part 2

10 Secure Coding Best Practices to Follow in Every Project

Tags:

npm

mithril