CVE-2026-11856: Successfully using libcurl to do a transfer to a specific HTTP origin ...

Severity: Critical

CVSS Score: 9.8

Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.