CVE-2026-101910

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Source
https://cve.org/CVERecord?id=CVE-2026-101910
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101910.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-101910
Aliases
Downstream
Published
2026-09-28T17:45:27Z
Modified
2026-09-29T03:45:59Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N CVSS Calculator
Summary
ip-address: no classifier recognizes the NAT64 local-use range 64:ff9b:1::/48, allowing SSRF and trust-boundary bypass
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-918"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101910.json"
}
References

Affected packages

Git / github.com/beaugunderson/ip-address

Affected ranges

Type
GIT
Repo
https://github.com/beaugunderson/ip-address
Events
Introduced
80fccaae984618f35dc941efab55cf2440ab37e8
Fixed
38b02d73cfc0724f9ad61c65b6328e116eac03ec
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "10.2.0"
        },
        {
            "fixed":  "10.5.1"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v10.*
v10.2.0
v10.2.1
v10.2.2
v10.3.0
v10.3.1
v10.4.0
v10.5.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101910.json"