https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-03T00:03:58.248437+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2020-12421 CVE-2020-12421 2026-10-03T00:03:58.249515+00:00

Affected: Mozilla Firefox ESR, Mozilla Firefox, Mozilla Thunderbird

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.