VulnerabilityAnalyzed

CVE-2026-25047

A prototype pollution vulnerability exists in version 1.0.7 of the deephas npm package that allows an attacker to modify global object behavior.

CRITICAL 9.4EPSS 0.73%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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 4.0: 9.4 CRITICALCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.73% probability · 52th percentile
CISA KEV: Not listed
Weakness: CWE-1321
Affected: sharpred/deephas
Source: security-advisories@github.com

References

https://github.com/sharpred/deepHas/commit/8097fafd3776c613d8066546653e0d2c7b5fc465Patch
https://github.com/sharpred/deepHas/security/advisories/GHSA-2733-6c58-pf27Exploit, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.