Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 115.8.0 ESR. Security Fix: Mozilla: Out-of-bounds memory read in networking channels Mozilla: Alert dialog could have been spoofed on another site Mozilla: Memory safety bugs fixed in Firefox 123, Firefox ESR 115.8, and Thunderbird 115.8 Mozilla: Fullscreen Notification could have been hidden by select element Mozilla: Custom cursor could obscure the permission dialog Mozilla: Mouse cursor re-positioned unexpectedly could have led to unintended permission grants Mozilla: Multipart HTTP Responses would accept the Set-Cookie header in response parts Mozilla: Incorrect code generation on 32-bit ARM devices For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.