The CSPSource::schemeMatches function in
WebKit/Source/core/frame/csp/CSPSource.cpp in the Content Security
Policy (CSP) implementation in Blink, as used in Google Chrome before
48.0.2564.82, does not apply http policies to https URLs and does not
apply ws policies to wss URLs, which makes it easier for remote
attackers to determine whether a specific HSTS web site has been
visited by reading a CSP report.
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