CVE-2026-80255 – A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of space (ascii co

A `Set-Cookie:` header using tab (horizontal tab, ASCII code 9) instead of
space (ascii code 32) immediately before the `Secure` attribute causes curl to
store the cookie without its Secure flag. The cookie might then wrongfully be
sent over plaintext HTTP on subsequent requests to the same host.