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High ALAS2023-2026-1470 37 CVEs

Important: firefox security update (Amazon Linux 2023)

Published Mar 2, 2026 · Updated Mar 27, 2026

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-2793: Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2792: Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2791: Mitigation bypass in the Networking: Cache component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2790: Same-origin policy bypass in the Networking: JAR component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2789: Use-after-free in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2788: Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2787: Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2786: Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2785: Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2784: Mitigation bypass in the DOM: Security component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2783: Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2782: Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2781: Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2780: Privilege escalation in the Netmonitor component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2779: Incorrect boundary conditions in the Networking: JAR component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2778: Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2777: Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2776: Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2775: Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2774: Integer overflow in the Audio/Video component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2773: Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2772: Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2771: Undefined behavior in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2770: Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2769: Use-after-free in the Storage: IndexedDB component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2768: Sandbox escape in the Storage: IndexedDB component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2767: Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2766: Use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2765: Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2764: JIT miscompilation, use-after-free in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2763: Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2762: Integer overflow in the JavaScript: Standard Library component. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. CVE-2026-2761: Sandbox escape in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2760: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2759: Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8. CVE-2026-2758: Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox < 148, F

Fixed packages 3

ReleasePackageFixed in
Amazon Linux · 2023 firefox 0:140.8.0-1.amzn2023.0.1
Amazon Linux · 2023 firefox-debuginfo 0:140.8.0-1.amzn2023.0.1
Amazon Linux · 2023 firefox-debugsource 0:140.8.0-1.amzn2023.0.1

Vulnerabilities 37

References

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    https://alas.aws.amazon.com/cve/html/CVE-2026-2757.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2758.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2759.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2760.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2761.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2762.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2763.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2764.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2765.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2766.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2767.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2768.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2769.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2770.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2771.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2772.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2773.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2774.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2775.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2776.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2777.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2778.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2779.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2780.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2781.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2782.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2783.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2784.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2785.html
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    https://alas.aws.amazon.com/cve/html/CVE-2026-2786.html