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CVE-2021-23984

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CVSS 3.1
6.5 medium
EPSS
1%p64
Published
()
Modified
Description

A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

Vendors
mozilla
Products
firefox, firefox esr, thunderbird
Weakness
CWE-290
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD CVE.org GitHub PoCs EPSS (1.1%)

In the news

No ingested article mentions this CVE yet.