What’s Vulnerable › Vulnerabilities

CVE-2021-26505

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-08-11 · updated 2026-06-17
• Weakness: CWE-1321

Description

Prototype pollution vulnerability in MrSwitch hello.js version 1.18.6, allows remote attackers to execute arbitrary code via hello.utils.extend function.

Affected products

• Hello.Js Project Hello.Js: 1.18.6

References

• https://github.com/MrSwitch/hello.js/issues/634
• https://github.com/MrSwitch/hello.js/issues/634

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