MrSwitch hello.js vulnerable to prototype pollution

Description

A prototype pollution vulnerability in MrSwitch hello.js prior to version 1.18.8 allows remote attackers to execute arbitrary code via hello.utils.extend function.

Recommendation

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

• Affected version(s): < 1.18.8
• Patched version(s): 1.18.8

References

• GHSA-g3vf-47fv-8f3c
• CVE-2021-26505
• CWE-1321
• CAPEC-310
• OWASP 2021-A6

Related Issues

• Prototype Pollution in lodash (GHSA-jf85-cpcp-j695) - CVE-2019-10744
• jquery-validation vulnerable to Cross-site Scripting - CVE-2025-3573
• @mozilla/readability Denial of Service through Regex - CVE-2025-2792
• ejson shell parser in MongoDB Compass maybe bypassed - CVE-2024-6376

Tags:

npm

hellojs