CVE-2026-101910

ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. From 10.2.0 until 10.5.1, the Address6 isPrivate classifier in src/ipv6.ts does not recognize the NAT64 local-use range 64:ff9b:1::/48. Applications that combine isPrivate, isLoopback, and isLinkLocal for a trust-boundary decision can treat an internal IPv4 destination encoded through that range as external. Exploitation depends on a server network using an operator-selected NAT64 prefix within the local-use range. A successful bypass can cross the intended network trust boundary. This issue is fixed in version 10.5.1.

• CWE-918

• https://github.com/beaugunderson/ip-address/commit/ab3dc88bcf5374344168a2ba075ca7ac4ff257f8
• https://github.com/beaugunderson/ip-address/releases/tag/v10.5.1
• https://github.com/beaugunderson/ip-address/security/advisories/GHSA-2vr4-cq9g-pvrc
• https://github.com/beaugunderson/ip-address/security/advisories/GHSA-2vr4-cq9g-pvrc

Published

Sep 28, 2026

Last Modified

Sep 28, 2026

Status

Received

• One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-101905Axios is a promise-based HTTP client for the browser and Nod…7.6
• CVE-2026-101906Axios is a promise-based HTTP client for the browser and Nod…8.2
• CVE-2026-101907Axios is a promise-based HTTP client for the browser and Nod…7
• CVE-2026-101908Axios is a promise-based HTTP client for the browser and Nod…6.9
• CVE-2026-101909Axios is a promise-based HTTP client for the browser and Nod…8.3
• CVE-2026-10191A vulnerability was determined in Tenda W12 3.0.0.7(4763). I…8.8
• CVE-2026-101911ip-address is a library for parsing and manipulating IPv4 an…6.3
• CVE-2026-101912ip-address is a library for parsing and manipulating IPv4 an…6.3
• CVE-2026-101913ip-address is a library for parsing and manipulating IPv4 an…6.3
• CVE-2026-101914@grpc/grpc-js implements the core functionality of gRPC pure…6.5
• CVE-2026-101915@grpc/grpc-js implements the core functionality of gRPC pure…3.7
• CVE-2026-10192A vulnerability was identified in Tenda W12 3.0.0.7(4763). T…8.8