Incorrect Behavior Order Affecting org.webjars.npm:ip-address package, versions [,10.7.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGWEBJARSNPM-20250965
- published29 Sept 2026
- disclosed28 Sept 2026
- creditEurico Nicacio
Introduced: 28 Sep 2026
NewCVE-2026-101913 (opens in a new tab)How to fix?
Upgrade org.webjars.npm:ip-address to version 10.7.0 or higher.
Overview
org.webjars.npm:ip-address is an A library for parsing IPv4 and IPv6 IP addresses in node and the browser.
Affected versions of this package are vulnerable to Incorrect Behavior Order via the isLinkLocal() method, which incorrectly compared only the first 64 bits of an IPv6 address against the fixed pattern fe80:0:0:0, effectively recognising only fe80::/64 as link-local. Addresses within the full fe80::/10 range defined by RFC 4291 §2.4 - such as fe81::1, febf::1, or fe80:0:0:1::1 - are incorrectly classified as non-link-local, causing the library to disagree with itself because getType() and getScope() already matched the correct /10 subnet. An attacker can exploit this inconsistency to bypass link-local address checks in applications that rely on isLinkLocal() for access control or routing decisions.