https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T13:53:30.376687+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2021-38506 CVE-2021-38506 2026-10-06T13:53:30.377836+00:00

Affected: Mozilla Firefox, Mozilla Thunderbird, Mozilla Firefox ESR

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.