Apache HttpClient 4.x before 4.1.1 in Apache HttpComponents, when used
with an authenticating proxy server, sends the Proxy-Authorization
header to the origin server, which allows remote web servers to obtain
sensitive information by logging this header.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[httpclient-users] 20110224 Proxy-Authorization header received on server side
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