Prototype Pollution in smart-extend

Description

All versions of smart-extend are vulnerable to Prototype Pollution. The deep() function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects.

Recommendation

No fix is available yet. Followings are affected versions:

• >= 0

References

• GHSA-f8h3-rqrm-47v9
• hackerone.com
• www.npmjs.com
• CWE-1321

Related Issues

• React Router has XSS Vulnerability - CVE-2025-59057
• Cross-site scripting in Swagger-UI - CVE-2019-17495
• Path Traversal in simplehttpserver - CVE-2018-16478
• Cross-Site Scripting in html-pages - CVE-2018-16481

Tags:

npm

smart-extend