A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1. Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15655 Reference (s):
- https://bugzilla.mozilla.org/show_bug.cgi?id=1645204
- URL: https://bugzilla.mozilla.org/show_bug.cgi?id=1645204
- https://www.mozilla.org/security/advisories/mfsa2020-30/
- URL: https://www.mozilla.org/security/advisories/mfsa2020-30/
- https://www.mozilla.org/security/advisories/mfsa2020-32/