Undici's Proxy-Authorization header not cleared on cross-origin redirect for dispatch, request, stream, pipeline

Impact

Undici cleared Authorization and Proxy-Authorization headers for fetch(), but did not clear them for undici.request().

Patches

This has been patched in https://github.com/nodejs/undici/commit/6805746680d27a5369d7fb67bc05f95a28247d75.
Fixes has been released in v5.28.4 and v6.11.1.

Workarounds

use fetch() or disable maxRedirections.

References

Linzi Shang reported this.

• https://hackerone.com/reports/2408074
• https://github.com/nodejs/undici/security/advisories/GHSA-3787-6prv-h9w3