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CVE-2026-101912 Details

Description

ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.7.1, the isInSubnet and isHostInSubnet methods in src/common.ts compare masked binary strings without validating that both operands use the same IP family. A cross-family containment check whose leading address bits match makes the masked strings compare equal even though IPv4 and IPv6 do not share an address space. An allowlist or denylist decision can therefore classify an address outside the intended range as contained. This issue is fixed in version 10.7.1.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/beaugunderson/ip-address/security/advisories/GHSA-j6r3-76f7-8jcv	CISA-ADP
https://github.com/beaugunderson/ip-address/commit/1343629d57fea413644a5c9d41ff1e59619f3f28	[email protected]
https://github.com/beaugunderson/ip-address/releases/tag/v10.7.1	[email protected]
https://github.com/beaugunderson/ip-address/security/advisories/GHSA-j6r3-76f7-8jcv	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-697	Incorrect Comparison	[email protected]
CWE-843	Access of Resource Using Incompatible Type ('Type Confusion')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 28, 2026	CVE Modified	CISA-ADP
Sep 28, 2026	New CVE Received	[email protected]