CVE-2026-101910 (GCVE-0-2026-101910)
Vulnerability from cvelistv5 – Published: 2026-09-28 17:45 – Updated: 2026-09-28 18:12
VLAI
EPSS
VEX
Title
ip-address: no classifier recognizes the NAT64 local-use range 64:ff9b:1::/48, allowing SSRF and trust-boundary bypass
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 18:12 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/beaugunderson/ip-address/secur… | x_refsource_CONFIRM |
| https://github.com/beaugunderson/ip-address/commi… | x_refsource_MISC |
| https://github.com/beaugunderson/ip-address/relea… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| beaugunderson | ip-address |
Affected:
>= 10.2.0, < 10.5.1
|
guessed |
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