CVE-2026-42038 | THREATINT

Description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, he fix for no_proxy hostname normalization bypass is incomplete. When no_proxy=localhost is set, requests to 127.0.0.1 and [::1] still route through the proxy instead of bypassing it. The shouldBypassProxy() function does pure string matching — it does not resolve IP aliases or loopback equivalents. This vulnerability is fixed in 1.15.1 and 0.31.1.

PUBLISHED Reserved 2026-04-23 | Published 2026-04-24 | Updated 2026-04-27 | Assigner GitHub_M

MEDIUM: 6.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

>= 1.0.0, < 1.15.1

affected

< 0.31.1

affected

References

github.com/.../axios/security/advisories/GHSA-m7pr-hjqh-92cm exploit

github.com/.../axios/security/advisories/GHSA-m7pr-hjqh-92cm

cve.org (CVE-2026-42038)

nvd.nist.gov (CVE-2026-42038)

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