Debian Firefox vulnerabilities

CVE-2025-8031 [CRITICAL] CVE-2025-8031: firefox - The `username:password` part was not correctly stripped from URLs in CSP reports... The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic Authentication credentials. This vulnerability affects Firefox < 141, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1. Scope: local sid: resolved (fixed in 141.0-1)

CVE-2026-4721 [CRITICAL] CVE-2026-4721: firefox - Memory safety bugs present in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird... Memory safety bugs present in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. 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 < 149, Firefox ESR < 115.34, Firefox ESR < 140.9

CVE-2026-4705 [CRITICAL] CVE-2026-4705: firefox - Undefined behavior in the WebRTC: Signaling component. This vulnerability affect... Undefined behavior in the WebRTC: Signaling component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2026-2788 [CRITICAL] CVE-2026-2788: firefox - Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerabil... Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-4710 [CRITICAL] CVE-2026-4710: firefox - Incorrect boundary conditions in the Audio/Video component. This vulnerability a... Incorrect boundary conditions in the Audio/Video component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9. Scope: local sid: resolved (fixed in 149.0-1)

CVE-2026-2787 [CRITICAL] CVE-2026-2787: firefox - Use-after-free in the DOM: Window and Location component. This vulnerability aff... Use-after-free in the DOM: Window and Location component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-2759 [CRITICAL] CVE-2026-2759: firefox - Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerab... Incorrect boundary conditions in the Graphics: ImageLib component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-2793 [CRITICAL] CVE-2026-2793: firefox - Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird... 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, Firefox ESR < 140.8

CVE-2024-29944 [HIGH] CVE-2024-29944: firefox - An attacker was able to inject an event handler into a privileged object that wo... An attacker was able to inject an event handler into a privileged object that would allow arbitrary JavaScript execution in the parent process. Note: This vulnerability affects Desktop Firefox only, it does not affect mobile versions of Firefox. This vulnerability affects Firefox < 124.0.1 and Firefox ESR < 115.9.1. Scope: local sid: resolved (fixed in 124.0.1-1)

CVE-2018-18500 [CRITICAL] CVE-2018-18500: firefox - A use-after-free vulnerability can occur while parsing an HTML5 stream in concer... A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65. Scope: local sid: resolved (fixed in 65.0-1)

CVE-2026-0879 [CRITICAL] CVE-2026-0879: firefox - Sandbox escape due to incorrect boundary conditions in the Graphics component. T... Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7. Scope: local sid: resolved (fixed in 147.0-1)

CVE-2026-2773 [CRITICAL] CVE-2026-2773: firefox - Incorrect boundary conditions in the Web Audio component. This vulnerability aff... Incorrect boundary conditions in the Web Audio component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2024-8385 [CRITICAL] CVE-2024-8385: firefox - A difference in the handling of StructFields and ArrayTypes in WASM could be use... A difference in the handling of StructFields and ArrayTypes in WASM could be used to trigger an exploitable type confusion vulnerability. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Thunderbird < 128.2. Scope: local sid: resolved (fixed in 130.0-1)

CVE-2026-2772 [CRITICAL] CVE-2026-2772: firefox - Use-after-free in the Audio/Video: Playback component. This vulnerability affect... Use-after-free in the Audio/Video: Playback component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-4720 [CRITICAL] CVE-2026-4720: firefox - Memory safety bugs present in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox ... Memory safety bugs present in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. 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 < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140

CVE-2026-2767 [CRITICAL] CVE-2026-2767: firefox - Use-after-free in the JavaScript: WebAssembly component. This vulnerability affe... Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-2777 [CRITICAL] CVE-2026-2777: firefox - Privilege escalation in the Messaging System component. This vulnerability affec... Privilege escalation in the Messaging System component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Scope: local sid: resolved (fixed in 148.0-1)

CVE-2026-5734 [CRITICAL] CVE-2026-5734: firefox - Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Fire... Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. 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 affects Firefox < 149.0.2, Firefox ESR < 140.9.1, Thunderbird < 149.0.2,

CVE-2026-2792 [CRITICAL] CVE-2026-2792: firefox - Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox ... 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, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140

CVE-2026-5735 [CRITICAL] CVE-2026-5735: firefox - Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. Some of t... Memory safety bugs present in Firefox 149.0.1 and Thunderbird 149.0.1. 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 affects Firefox < 149.0.2 and Thunderbird < 149.0.2. Scope: local sid: resolved (fixed in 149.0.2-1)