CVE-2026-42038
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 Apr 24, 2026
- CVSS 7.5 high
- 0.4% chance of exploitation in the next 30 days (EPSS)
- Public exploit code is available
- A fix is available