CVE-2023-27535

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP
connection reuse feature that can result in wrong credentials being used
during subsequent transfers. Previously created connections are kept in a
connection pool for reuse if they match the current setup. However, certain
FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER,
CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the
configuration match checks, causing them to match too easily. This could
lead to libcurl using the wrong credentials when performing a transfer,
potentially allowing unauthorized access to sensitive information.