CVE-2023-25730

A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

• CWE-1021

• https://bugzilla.mozilla.org/show_bug.cgi?id=1794622Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-06/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-07/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1794622Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-06/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2023-07/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1794622Issue Tracking, Permissions Required, Vendor Advisory

Published

Jun 2, 2023

Last Modified

Jun 17, 2026

Status

Modified

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