https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-07T18:23:33.741309+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2021-23999 CVE-2021-23999 2026-10-07T18:23:33.743135+00:00

Affected: Mozilla Firefox ESR, Mozilla Thunderbird, Mozilla Firefox

If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.