We are currently using the SSL_CTX_load_verify_mem function that is a libressl-specific function to set the Certificate Authority bundle from memory. However, a similar process can be done with OpenSSL and its forks by using CURLOPT_CAINFO_Blob, which is supported since libcurl 7.77.0.
Pull request: https://github.com/WebKit/WebKit/pull/6693
Committed 256904@main (a845b7e4ec04): <https://commits.webkit.org/256904@main> Reviewed commits have been landed. Closing PR #6693 and removing active labels.
<rdar://problem/102579058>