Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fix(es): * firefox: Content-Disposition header ignored when a file is included in an embed or object tag (CVE-2025-6430) * firefox: Use-after-free in FontFaceSet (CVE-2025-6424) * firefox: Incorrect parsing of URLs could have allowed embedding of youtube.com (CVE-2025-6429) * firefox: The WebCompat WebExtension shipped with Firefox exposed a persistent UUID (CVE-2025-6425) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.