| CVE-2026-8974 | 高危8.8 | Memory safety bugs present in Thunderbird 140.10 and Thunderbird 150. 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 151, Firefox ESR 140.11, Thunderbird 151, and Thunde | 19/05/2026 |
| CVE-2026-8973 | 高危8.8 | Memory safety bugs present in Thunderbird 150. 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 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8972 | 高危8.8 | Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8971 | 中危6.5 | Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8970 | 高危8.8 | Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. | 19/05/2026 |
| CVE-2026-8969 | 高危8.1 | Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8968 | 高危7.5 | 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 | 高危7.5 | Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8966 | 高危7.5 | Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8965 | 高危7.5 | Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8964 | 高危7.5 | Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8963 | 高危7.5 | Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8962 | 高危8.1 | 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 | 中危6.5 | 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 | 高危7.5 | Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151. | 19/05/2026 |
| CVE-2026-8959 | 严重9.6 | 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 | 高危8.6 | 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 | 高危8.8 | 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 | 严重9.8 | 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 | 高危8.8 | 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 |