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TI-2021-06090 Aliases CVE-2021-23397GHSA-42m6-g935-5vmq

Prototype pollution in @ianwalter/merge

Priority MEDIUM 44CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

All versions of package @ianwalter/merge are vulnerable to Prototype Pollution via the main (merge) function. Maintainer suggests using @generates/merger instead.

Why it matters now

EPSS 0.00822 57th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—@ianwalter/mergeall versions—No fix listedCNA
—@ianwalter/merge (npm)up to 9.0.1—No fix listedGHSA-42m6-g935-5vmq
  • @ianwalter/merge Vendor— Affected all versions Fixed in — No fix listed CNA
  • @ianwalter/merge (npm) Vendor— Affected up to 9.0.1 Fixed in — No fix listed GHSA-42m6-g935-5vmq

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:merge_project:merge:*:*:*:*:*:node.js:*:*all versionsVulnerableMerge Project
  • cpe:2.3:a:merge_project:merge:*:*:*:*:*:node.js:*:* Versions all versions Vulnerable ·Merge Project

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-23397
  2. 2026-10-03 Alias added: GHSA-42m6-g935-5vmq

References

Advisory 1

Other 1

  • TI-2021-02590 Prototype Pollution in viking04/merge CVSS 3.1CRITICAL 9.8
  • TI-2020-17302 Prototype pollution in merge CVSS 3.1CRITICAL 9.8
  • TI-2018-11811 Uncontrolled resource consumption in HackerOne merge CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences