ALAS2023-2026-1725

References: CVE-2026-45186  CVE-2026-8090  CVE-2026-8091  CVE-2026-8092  CVE-2026-8094 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input. (CVE-2026-45186)

Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. (CVE-2026-8090)

Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150, Thunderbird 150, Firefox ESR 140.10.1, Thunderbird 140.10.1, and Firefox ESR 115.35.2. (CVE-2026-8091)

Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2. (CVE-2026-8092)

Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2. (CVE-2026-8094)

Issue Correction:
Run dnf update firefox --releasever 2023.11.20260526 or dnf update --advisory ALAS2023-2026-1725 --releasever 2023.11.20260526 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:

aarch64:
    firefox-debuginfo-140.10.2-1.amzn2023.0.3.aarch64
    firefox-140.10.2-1.amzn2023.0.3.aarch64
    firefox-debugsource-140.10.2-1.amzn2023.0.3.aarch64

src:
    firefox-140.10.2-1.amzn2023.0.3.src

x86_64:
    firefox-debuginfo-140.10.2-1.amzn2023.0.3.x86_64
    firefox-140.10.2-1.amzn2023.0.3.x86_64
    firefox-debugsource-140.10.2-1.amzn2023.0.3.x86_64