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Fixing a Prototype Override Protection Bypass Vulnerability in qs

Blog post from Snyk

Post Details
Company
Date Published
Author
Tim Kadlec
Word Count
546
Company Posts That Month
2
Language
English
Hacker News Points
-
Post removed?
No
Summary

The qs package is a widely used npm library for parsing querystring parameters into objects, enabling advanced functionality such as creating nested objects within query strings. However, this functionality also brings risk, including the potential to overwrite properties in an object's prototype. A high-severity vulnerability was discovered and fixed by the package owner, with multiple versions of the library released to address the issue. To mitigate the vulnerability, users must update to a newer version of the qs package, which includes a more robust fix that prevents attackers from overriding the object's prototype properties.

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