Vulnerability · Published Apr 24, 2026 · Assigned by GitHub_M
CVE-2026-42038Axios: no_proxy bypass via IP alias allows SSRF
Medium 6.8
In plain English
A medium-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 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | node-axios | no fix listed | DEBIAN-CVE-2026-42038 |
| Debian:13 | node-axios | no fix listed | DEBIAN-CVE-2026-42038 |
| Debian:14 | node-axios | 1.15.2-1 | DEBIAN-CVE-2026-42038 |
| Ubuntu:25.10 | node-axios | no fix listed | UBUNTU-CVE-2026-42038 |
| Ubuntu:26.10 | node-axios | no fix listed | UBUNTU-CVE-2026-42038 |
| npm | axios | 0.31.1 | GHSA-m7pr-hjqh-92cm |
| npm | axios | 1.15.1 | GHSA-m7pr-hjqh-92cm |
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
References
- https://github.com/axios/axios/security/advisories/GHSA-m7pr-hjqh-92cm x_refsource_CONFIRM