| CVE-2026-4686 | 높음7.5 | Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 24/03/2026 |
| CVE-2026-4685 | 높음7.5 | Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 24/03/2026 |
| CVE-2026-4684 | 높음7.5 | Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. | 24/03/2026 |
| CVE-2026-3847 | 높음8.8 | Memory safety bugs present in Firefox 148.0.2. 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 148.0.2. | 10/03/2026 |
| CVE-2026-3846 | 보통6.5 | Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 148.0.2. | 10/03/2026 |
| CVE-2026-3845 | 높음8.8 | Heap buffer overflow in the Audio/Video: Playback component in Firefox for Android. This vulnerability was fixed in Firefox 148.0.2. | 10/03/2026 |
| CVE-2026-2807 | 심각9.8 | Memory safety bugs present in 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 was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2806 | 심각9.1 | Uninitialized memory in the Graphics: Text component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2805 | 심각9.8 | Invalid pointer in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2804 | 보통5.4 | Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2803 | 높음7.5 | Information disclosure, mitigation bypass in the Settings UI component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2802 | 보통4.2 | Race condition in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2801 | 높음7.5 | Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2800 | 심각9.8 | Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2799 | 심각9.8 | Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2798 | 높음8.8 | Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2797 | 심각9.8 | Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2796 | 심각9.8 | JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2795 | 심각9.8 | Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 148 and Thunderbird 148. | 24/02/2026 |
| CVE-2026-2794 | 높음7.5 | Information disclosure due to uninitialized memory in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 148. | 24/02/2026 |