In jQuery versions greater than or equal to 1.0.3 and before 3.5.0, passing HTML containing <option> elements from untrusted sources - even after sanitizing it - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code. This problem is patched in jQuery 3.5.0.. A flaw was found in jQuery. HTML containing \<option\> elements from untrusted sources are passed, even after sanitizing, to one of jQuery's DOM manipulation methods, which may execute untrusted code. The highest threat from this vulnerability is to data confidentiality and integrity.
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