medium6.8
CVE-2026-42038
Axios is a promise based HTTP client for the browser and Node.js.
Impact
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
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | axios | >= 1.0.0, < 1.15.1 | 1.15.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Axios | Axios | before 0.31.1 from 1.0.0 before 1.15.1 |