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  5. CVE-2021-23568

CVE-2021-23568: Prototype Pollution in extend2

January 10, 2022 (updated January 13, 2022)

The package extend2 is vulnerable to Prototype Pollution via the extend function due to unsafe recursive merge.

References

  • github.com/advisories/GHSA-gjm5-83cw-p3p2
  • github.com/eggjs/extend2/blob/master/index.js%23L50-L60
  • github.com/eggjs/extend2/commit/aa332a59116c8398976434b57ea477c6823054f8
  • github.com/eggjs/extend2/pull/2
  • nvd.nist.gov/vuln/detail/CVE-2021-23568
  • snyk.io/vuln/SNYK-JS-EXTEND2-2320315

Code Behaviors & Features

Detect and mitigate CVE-2021-23568 with GitLab Dependency Scanning

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Affected versions

All versions before 1.0.1

Fixed versions

  • 1.0.1

Solution

Upgrade to version 1.0.1 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/extend2/CVE-2021-23568.yml

Spotted a mistake? Edit the file on GitLab.

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