CVE-2022-31738

When exiting fullscreen mode, an iframe could have confused the browser about the current state of fullscreen, resulting in potential user confusion or spoofing attacks. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

• CWE-290
• CWE-290

• https://bugzilla.mozilla.org/show_bug.cgi?id=1756388Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2022-20/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2022-21/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2022-22/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1756388Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2022-20/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2022-21/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2022-22/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1756388Issue Tracking, Permissions Required, Vendor Advisory

Published

Dec 22, 2022

Last Modified

Jun 17, 2026

Status

Modified

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