| CVE-2026-8969 | ALTO8.1 | Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8968 | ALTO7.5 | Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8967 | ALTO7.5 | Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8966 | ALTO7.5 | Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8965 | ALTO7.5 | Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8964 | ALTO7.5 | Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8963 | ALTO7.5 | Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8962 | ALTO8.1 | Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8961 | MÉDIO6.5 | Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8960 | ALTO7.5 | Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8959 | CRÍTICO9.6 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8958 | ALTO8.6 | Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8957 | ALTO8.8 | Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8956 | CRÍTICO9.8 | Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8955 | ALTO8.8 | Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8954 | ALTO7.5 | Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8953 | CRÍTICO9.6 | Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8952 | ALTO8.8 | Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8951 | MÉDIO6.5 | Spoofing issue in the Toolbar component in Firefox for Android. This vulnerability was fixed in Firefox 151. | 19/05/2026 |
| CVE-2026-8950 | CRÍTICO9.3 | Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |