JLSEC-2026-1220 In this scenario, libcurl first uses a proper HTTP/3 server for the initial transfers, and when...

In this scenario, libcurl first uses a proper HTTP/3 server for the initial transfers, and when it makes a second transfer to the same site it has been replaced by the attacker's impostor machine - without a valid certificate. When libcurl returns to the hostname the second time with a cached SSL...