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.
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Affected Vendors & Products
References
History
No history.

Status: PUBLISHED
Assigner: mozilla
Published: 2018-06-11T21:00:00
Updated: 2024-08-05T16:12:28.355Z
Reserved: 2017-04-12T00:00:00
Link: CVE-2017-7820

No data.

Status : Modified
Published: 2018-06-11T21:29:10.873
Modified: 2024-11-21T03:32:44.003
Link: CVE-2017-7820

No data.