CVE-2017-7820: vulnerability in Mozilla Firefox
Published · Updated
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3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 1.2%
The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.
Affected products
Mozilla · FirefoxRelated CVEs — Mozilla Firefox
In the same product, most dangerous first.