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Vulnerability · Published Jun 11, 2026 · Assigned by GitHub_M

CVE-2026-44492Axios: shouldBypassProxy does not recognize IPv4-mapped IPv6 addresses, allowing NO_PROXY bypass (incomplete fix for CVE-2025-62718)

High 8.6

In plain English

A high-severity server-side request forgery in axios from axios. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 12.3% (higher than 96% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High
Exploit odds (30 days)12.3%top 3.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 0.32.0 and 1.16.0, Axios does not normalise IPv4-mapped IPv6 addresses. When NO_PROXY lists an IPv4 address such as 127.0.0.1 or 169.254.169.254, a request URL using the IPv4-mapped IPv6 form (::ffff:7f00:1, ::ffff:a9fe:a9fe) still routes through the configured proxy. Node.js resolves these addresses to the underlying IPv4 host, so the request reaches the internal service via the proxy rather than being blocked. This vulnerability is fixed in 0.32.0 and 1.16.0.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13node-axiosno fix listedDEBIAN-CVE-2026-44492
Debian:14node-axios1.16.0-1DEBIAN-CVE-2026-44492
Ubuntu:25.10node-axiosno fix listedUBUNTU-CVE-2026-44492
Ubuntu:26.10node-axiosno fix listedUBUNTU-CVE-2026-44492
npmaxios1.16.0GHSA-pjwm-pj3p-43mv
npmaxios0.32.0GHSA-pjwm-pj3p-43mv

Affected products (as reported)

VendorProductVersions
axios axios >= 1.0.0, < 1.16.0< 0.32.0

Weakness: CWE-918, CWE-289 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References