TI-2026-20231 Aliases CVE-2026-25047 GHSA-2733-6c58-pf27

deepHas vulnerable to Prototype Pollution via constructor.prototype

MEDIUM 44CWE-1321Published 2026-01-29 · Updated 2026-02-02

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

deepHas provides a test for the existence of a nested object key and optionally returns that key. A prototype pollution vulnerability exists in version 1.0.7 of the deephas npm package that allows an attacker to modify global object behavior. This issue was fixed in version 1.0.8.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00796 56th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed deepHas (sharpred): 1.0.7deephas (npm): 1.0.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
sharpred	deepHas	before 1.0.7	1.0.7	Patch available	CNA
—	deephas (npm)	before 1.0.8	1.0.8	Patch available	GHSA-2733-6c58-pf27

deepHas Vendorsharpred Affected before 1.0.7 Fixed in 1.0.7 Patch available CNA
deephas (npm) Vendor— Affected before 1.0.8 Fixed in 1.0.8 Patch available GHSA-2733-6c58-pf27

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:sharpred:deephas:1.0.7:::::node.js::	1.0.7	Vulnerable	sharpred

cpe:2.3:a:sharpred:deephas:1.0.7:*:*:*:*:node.js:*:* Versions 1.0.7 Vulnerable ·sharpred

Remediation

Fix · CNA deepHas (sharpred) Fixed in 1.0.7
Fix · GHSA-2733-6c58-pf27 deephas (npm) Fixed in 1.0.8 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-25047
2026-10-03 Alias added: GHSA-2733-6c58-pf27

References

TI-2020-17165 Prototype pollution in deephas CVSS 3.1CRITICAL 9.8

Sources

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