VYPR
Medium severity4.3NVD Advisory· Published Dec 8, 2021· Updated Jun 17, 2026

CVE-2021-38506

CVE-2021-38506

Description

Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

47

Patches

Vulnerability mechanics

References

10

News mentions

0

No linked articles in our index yet.