CVE-2026-25047

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.

Scoring

Severity
CRITICAL
CVSS base score
9.4
CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS probability
0.73%
CWE
CWE-1321
Published
2026-01-29
Last modified
2026-03-12

Affected products

Weakness type

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