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CVE-2021-26505: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

August 11, 2023 (updated August 16, 2023)

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

References

  • github.com/MrSwitch/hello.js/issues/634
  • nvd.nist.gov/vuln/detail/CVE-2021-26505

Code Behaviors & Features

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Affected versions

All versions before 1.18.8

Fixed versions

  • 1.18.8

Solution

Upgrade to version 1.18.8 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Source file

npm/hellojs/CVE-2021-26505.yml

Spotted a mistake? Edit the file on GitLab.

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