Vulnerabilidades do Mozilla Thunderbird

CVE-2026-8969 Alta · 8.1 CWE-693 19/05/2026

Mitigation bypass in the DOM: Security component

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8968 Alta · 7.5 CWE-400 19/05/2026

Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component

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.

CVE-2026-8967 Alta · 7.5 CWE-200 19/05/2026

Information disclosure in the Graphics: WebGPU component

Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8966 Alta · 7.5 CWE-200 19/05/2026

Information disclosure in the IP Protection component

Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8965 Alta · 7.5 CWE-200 19/05/2026

Information disclosure in the DOM: Security component

Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8964 Alta · 7.5 CWE-451 19/05/2026

Spoofing issue in the Popup Blocker component

Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8963 Alta · 7.5 CWE-290 19/05/2026

Spoofing issue in the Web Speech component

Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8962 Alta · 8.1 CWE-693 19/05/2026

Mitigation bypass in the DOM: Security component

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8961 Média · 6.5 CWE-290 19/05/2026

Spoofing issue in the Form Autofill component

Spoofing issue in the Form Autofill component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8960 Alta · 7.5 CWE-290 19/05/2026

Spoofing issue in WebExtensions

Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8959 Crítica · 9.6 CWE-20 19/05/2026

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component

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.

CVE-2026-8958 Alta · 8.6 CWE-668 19/05/2026

Information disclosure, sandbox escape in the Security: Process Sandboxing component

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.

CVE-2026-8957 Alta · 8.8 CWE-269 19/05/2026

Privilege escalation in the Enterprise Policies component

Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8956 Crítica · 9.8 CWE-190 19/05/2026

Integer overflow in the Networking: JAR component

Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8955 Alta · 8.8 CWE-269 19/05/2026

Privilege escalation in the DOM: Workers component

Privilege escalation in the DOM: Workers component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8954 Alta · 7.5 CWE-119 19/05/2026

Incorrect boundary conditions, integer overflow in the Audio/Video component

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.

CVE-2026-8953 Crítica · 9.6 CWE-416 19/05/2026

Sandbox escape due to use-after-free in the Disability Access APIs component

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.

CVE-2026-8952 Alta · 8.8 CWE-269 19/05/2026

Privilege escalation in the Application Update component

Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8950 Crítica · 9.3 CWE-346 19/05/2026

Same-origin policy bypass in the Networking: HTTP component

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.

CVE-2026-8949 Alta · 7.5 CWE-190 19/05/2026

Integer overflow in the Widget: Win32 component

Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8948 Crítica · 9.1 CWE-942 19/05/2026

Same-origin policy bypass in the DOM: Networking component

Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVE-2026-8947 Alta · 7.3 CWE-416 19/05/2026

Use-after-free in the DOM: Bindings (WebIDL) component

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8946 Alta · 7.5 CWE-119 19/05/2026

Incorrect boundary conditions in the Audio/Video: Web Codecs component

Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVE-2026-8094 Crítica · 9.8 CWE-94 07/05/2026

Other issue in the WebRTC component

Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.

CVE-2026-8093 Alta · 8.1 CWE-119 07/05/2026

Memory safety bugs fixed in Firefox 150.0.2

Memory safety bugs present in Firefox 150.0.1. 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 was fixed in Firefox 150.0.2 and Thunderbird 150.0.2.