A cross-origin iframe referencing an XSLT document would inherit the parent domain's permissions (such as microphone or camera access). This vulnerability affects Thunderbird < 102.2, Thunderbird < 91.13, Firefox ESR < 91.13, Firefox ESR < 102.2, and Firefox < 104.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-38473
• https://bugzilla.mozilla.org/show_bug.cgi?id=1771685
• https://www.mozilla.org/security/advisories/mfsa2022-33/
• https://www.mozilla.org/security/advisories/mfsa2022-34/
• https://www.mozilla.org/security/advisories/mfsa2022-35/
• https://www.mozilla.org/security/advisories/mfsa2022-36/
• https://www.mozilla.org/security/advisories/mfsa2022-37/