CVE-2026-25047

CVE-2026-25047 · deepHas vulnerable to Prototype Pollution via constructor.prototype

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.4 · Critical · EPSS 0.8% · Public exploit · Fix available

Published: 2026-01-29T21:39:48.498Z
Updated: 2026-02-02T16:35:22.701Z

Stack: node

Affected products and versions

deephas
Versions
- < 1.0.7: Affected
No fix published
deephas npm
Affected ranges
- SEMVER: < 1.0.8
Update to 1.0.8

Original sources

https://github.com/sharpred/deepHas/security/advisories/GHSA-2733-6c58-pf27
https://github.com/sharpred/deepHas/commit/8097fafd3776c613d8066546653e0d2c7b5fc465
https://nvd.nist.gov/vuln/detail/CVE-2026-25047

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