Some vulnerabilities have been reported in Opera, which can be exploited by malicious people to conduct script insertion attacks, to bypass certain security restrictions, disclose potentially sensitive information, or potentially to compromise a vulnerable system.
1) Certain parts of the URL of visited pages are not properly sanitised by the "History Search" functionality before being used. This can be exploited to inject arbitrary HTML and script code, which is executed in a user's browser session when the malicious data is being viewed.
Successful exploitation allows e.g. the disclosure of previously visited pages or changing Opera's preferences, which can further be exploited to execute arbitrary commands.
3) An error exists while blocking scripts during a news feed preview. This can be exploited to disclose the content of subscribed news feeds or to subscribe the user to an arbitrary news feed.
The vulnerabilities are reported in versions prior to 9.61.
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Subject: Opera Multiple Vulnerabilities
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