CVE-2026-2796

CVE-2026-2796 describes a JIT miscompilation in the JavaScript: WebAssembly component that affects Firefox and Thunderbird prior to version 148. The root cause is a JIT miscompilation in the WebAssembly pathway within the JavaScript engine, leading to a high-severity impact (as reflected by the C...

CVE-2026-2796

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148...

CVE-2026-2767

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2767 Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2767 Use-after-free in the JavaScript: WebAssembly component

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

CVE-2026-2767

CVE-2026-2767 is a use-after-free vulnerability in the JavaScript: WebAssembly component of Firefox/Thunderbird. Affected products include Firefox (Desktop) and Thunderbird with the WebAssembly implementation; the issue is addressed by fixes in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and...

EUVD-2026-8488

Use-after-free in the JavaScript: WebAssembly component. This vulnerability affects Firefox 148 and Firefox ESR 140.8...

CVE-2026-2767

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...

RUSTSEC-2026-0020 Guest-controlled resource exhaustion in WASI implementations

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-852m-cvvp-9p4w For more information see the GitHub-hosted security advisory...

Guest-controlled resource exhaustion in WASI implementations

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-852m-cvvp-9p4w For more information see the GitHub-hosted security advisory...

Mozilla Firefox and Mozilla Thunderbird security vulnerabilities

Mozilla Firefox and Mozilla Thunderbird are both products of the American Mozilla Foundation. Mozilla Firefox is an open-source web browser. Mozilla Thunderbird is an email client software that emerged independently from the Mozilla Application Suite. This software supports IMAP and POP email...

WasmTime security vulnerability

Wasmtime is a lightweight WebAssembly runtime open source by the Bytecode Alliance. Versions of Wastime prior to 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0 contain security vulnerabilities. These vulnerabilities stem from the wasi:http/types Fields resource implementation, where excessive header...

CVE-2026-2796: Access of Resource Using Incompatible Type

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148...

CVE-2026-27195: Improper Handling of Exceptional Conditions

Wasmtime is a runtime for WebAssembly. Starting with Wasmtime 39.0.0, the component-model-async feature became the default, which brought with it a new implementation of TypedFunc::callasync which made it capable of calling async-typed guest export functions. However, that implementation had a bu...

WasmTime security vulnerability

Wasmtime is a lightweight WebAssembly runtime open source by the Bytecode Alliance. Versions of Wastime prior to 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0 contain security vulnerabilities. These vulnerabilities stem from the lack of proper restrictions on resource allocation for guest machine...

Mozilla Firefox and Mozilla Thunderbird code-related vulnerabilities

Mozilla Firefox and Mozilla Thunderbird are both products of the American Mozilla Foundation. Mozilla Firefox is an open-source web browser. Mozilla Thunderbird is an email client software that emerged independently from the Mozilla Application Suite. This software supports IMAP and POP email...

CVE-2026-2801: Improper Check for Unusual or Exceptional Conditions

Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148...

Mozilla Firefox and Mozilla Thunderbird security vulnerabilities

Mozilla Firefox is an open source web browser.Mozilla Thunderbird is a set of e-mail client software separate from the Mozilla Application Suite. The software supports IMAP, POP mail protocols and HTML mail format. A code execution vulnerability exists in Mozilla Firefox and Mozilla Thunderbird,...

CVE-2026-2804: Use After Free

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148...

CVE-2026-2767: Use After Free

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...