CVE-2026-101913
ip-address: Address6.isLinkLocal() recognizes fe80::/64 rather than fe80::/10, allowing SSRF and trust-boundary bypass to on-link hosts
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.5.1, the Address6 isLinkLocal method in src/ipv6.ts recognizes only fe80::/64 instead of the complete fe80::/10 IPv6 link-local range. An attacker-controlled address elsewhere in fe80::/10 can therefore pass a trust-boundary check that relies on isLinkLocal. The same address is identified as link-local by getType and getScope, exposing the inconsistent classification. A successful bypass can reach an on-link host outside the intended trust boundary. This issue is fixed in version 10.5.1.
| CWE | CWE-697 CWE-918 |
| Vendor | beaugunderson |
| Product | ip-address |
| Published | Sep 28, 2026 |
| Last Updated | Sep 28, 2026 |
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Affected Versions
beaugunderson / ip-address
< 10.5.1