Updated async-http-client packages fix security vulnerabilities:
It was found that async-http-client would disable SSL/TLS certificate verification under certain conditions, for example if HTTPS communication also uses client certificates. This can be exploited by a Man-in-the-middle (MITM) attack where the attacker can spoof a valid certificate (CVE-2013-7397).
It was found that async-http-client did not verify that the server hostname matched the domain name in the subject's Common Name (CN) or subjectAltName field in X.509 certificates. This could allow a man-in-the-middle attacker to spoof an SSL server if they had a certificate that was valid for any domain name (CVE-2013-7398).