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TI-2020-17164 Aliases CVE-2020-28270GHSA-fxwf-45c7-4ppr

Prototype pollution in object-hierarchy-access

Priority MEDIUM 49CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Tampering
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-915.

Summary

Prototype pollution vulnerability in 'object-hierarchy-access' versions 0.2.0 through 0.32.0 allows attacker to cause a denial of service and may lead to remote code execution.

Why it matters now

EPSS 0.03846 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed object-hierarchy-access (npm): 0.33.0

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—object-hierarchy-access0.32.0, 0.31.0, 0.30.0, 0.29.1, 0.29.0, 0.28.0, 0.27.1, 0.27.0, 0.26.0, 0.25.2, 0.25.1, 0.25.0, 0.24.0, 0.23.0, 0.22.0, 0.21.0, 0.20.2, 0.20.1, 0.20.0, 0.19.0, 0.18.0, 0.17.0, 0.16.0, 0.15.0, 0.14.1, 0.13.1, 0.12.0, 0.11.0, 0.10.0, 0.9.0, 0.8.0, 0.7.3, 0.7.2, 0.6.0, 0.5.2, 0.5.1, 0.4.3, 0.4.2, 0.4.1, 0.4.0, 0.2.0—No fix listedCNA
—object-hierarchy-access (npm)0.2.0 to before 0.33.00.33.0Patch availableGHSA-fxwf-45c7-4ppr
  • object-hierarchy-access Vendor— Affected 0.32.0, 0.31.0, 0.30.0, 0.29.1, 0.29.0, 0.28.0, 0.27.1, 0.27.0, 0.26.0, 0.25.2, 0.25.1, 0.25.0, 0.24.0, 0.23.0, 0.22.0, 0.21.0, 0.20.2, 0.20.1, 0.20.0, 0.19.0, 0.18.0, 0.17.0, 0.16.0, 0.15.0, 0.14.1, 0.13.1, 0.12.0, 0.11.0, 0.10.0, 0.9.0, 0.8.0, 0.7.3, 0.7.2, 0.6.0, 0.5.2, 0.5.1, 0.4.3, 0.4.2, 0.4.1, 0.4.0, 0.2.0 Fixed in — No fix listed CNA
  • object-hierarchy-access (npm) Vendor— Affected 0.2.0 to before 0.33.0 Fixed in 0.33.0 Patch available GHSA-fxwf-45c7-4ppr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mjpclab:object-hierarchy-access:*:*:*:*:*:*:*:*0.2.0 – 0.32.0VulnerableMjpclab
  • cpe:2.3:a:mjpclab:object-hierarchy-access:*:*:*:*:*:*:*:* Versions 0.2.0 – 0.32.0 Vulnerable ·Mjpclab

Remediation

  • Fix · GHSA-fxwf-45c7-4ppr object-hierarchy-access (npm) Fixed in 0.33.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-28270
  2. 2026-10-03 Alias added: GHSA-fxwf-45c7-4ppr
  3. 2026-10-18 EPSS moved to the 90th–95th percentile

References

Exploit 1

Patch 1

Advisory 1

Other 2

Sources

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