Insufficient Comparison Affecting unleash-proxy package, versions <1.4.19-r13


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-UNLEASHPROXY-20391645
  • published2 Oct 2026
  • disclosed28 Sept 2026

Introduced: 28 Sep 2026

NewCVE-2026-101913  (opens in a new tab)
CWE-697  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Chainguard unleash-proxy to version 1.4.19-r13 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream unleash-proxy package and not the unleash-proxy package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1