Critical

ts-deepmerge before 2.0.2 vulnerable to Prototype Pollution

  • Disclosed: 10.08.2022
  • Updated: 11.10.2026 10:22

The package ts-deepmerge before version 2.0.2 is vulnerable to Prototype Pollution due to missing sanitization of the merge function.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package ts-deepmerge < 2.0.2 2.0.2

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-1321
Platform
npm
Package
ts-deepmerge
Disclosed
10.08.2022
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-7qqq-gh2f-wq76 - CC BY 4.0

Vulnerability history: ts-deepmerge

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
08.2022 06.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • Medium 1

Disclosures per year

  1. 2022: 1
  2. 2023: 0
  3. 2024: 0
  4. 2025: 0
  5. 2026: 1
  1. Medium · 5.3 CVE-2026-12644 < 8.0.0 8.0.0
  2. ts-deepmerge before 2.0.2 vulnerable to Prototype Pollution this entry
    Critical · 9.8 CVE-2022-25907 < 2.0.2 2.0.2

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