CVE-2021-23984 (GCVE-0-2021-23984)

Vulnerability from cvelistv5 – Published: 2021-03-31 13:41 – Updated: 2024-08-03 19:14
VLAI
Summary
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.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • Malicious extensions could have spoofed popup information
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox ESR Affected: unspecified , < 78.9 (custom)
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Mozilla Firefox Affected: unspecified , < 87 (custom)
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Mozilla Thunderbird Affected: unspecified , < 78.9 (custom)
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