CVE-2026-12321

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: JIT miscompilation in the JavaScript: WebAssembly component...

Astra Linux – Vulnerability in Chromium

Inappropriate implementation in WebAssembly in Google Chrome prior to 145.0.7632.159 allowed a remote attacker to perform out-of-bounds memory access via a crafted HTML page. Chromium security severity: High...

Astra Linux – Vulnerability in Firefox

A 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...

Astra Linux – Vulnerability in Firefox

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

Astra Linux – Vulnerability in Firefox

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

Astra Linux – Vulnerability in Firefox

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

SUSE CVE-2026-12321

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

CVE-2026-12321

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

UBUNTU-CVE-2026-12321

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

CVE-2026-12321 JIT miscompilation in the JavaScript: WebAssembly component

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

CVE-2026-12321 JIT miscompilation in the JavaScript: WebAssembly component

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

EUVD-2026-37067

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

CVE-2026-12321

Summary: CVE-2026-12321 is a JIT miscompilation in the JavaScript: WebAssembly component. Affected products: Firefox and Thunderbird (WebAssembly/JS engine). Root cause: JIT miscompilation in the WebAssembly component. Impact: Not explicitly quantified beyond miscompilation; CVSS v3.1 base score ...

CVE-2026-12321

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

CVE-2026-12321

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...

PT-2026-49690

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 152 Thunderbird versions prior to 152 Description JIT miscompilation occurs in the JavaScript: WebAssembly component. Just-In-Time JIT compilation is a method used to improve the execution speed of programs by compili...

UBUNTU-CVE-2026-47261

Wasmtime is a runtime for WebAssembly. In versions prior to 24.0.9, 36.0.10, and 44.0.2, when a filesystem preopen is given DirPerms::all and FilePerms::READ without FilePerms::WRITE, this access control mechanism can be bypassed via the wasip2 descriptor.open-at or wasip1 pathopen interfaces by...

CVE-2026-47261 Wasmtime: WASI path_open(TRUNCATE) bypasses `FilePerms::WRITE` host restriction

Wasmtime is a runtime for WebAssembly. In versions prior to 24.0.9, 36.0.10, and 44.0.2, when a filesystem preopen is given DirPerms::all and FilePerms::READ without FilePerms::WRITE, this access control mechanism can be bypassed via the wasip2 descriptor.open-at or wasip1 pathopen interfaces by...

CVE-2026-47210

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, a sandbox escape vulnerability in vm2 allows arbitrary code execution in the host process when untrusted code is executed with async support on runtimes exposing WebAssembly JSPI WebAssembly.promising / WebAssembly.Suspending...

CVE-2026-47210 vm2 sandbox escape via JSPI-backed Promise `.finally()` species bypass

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, a sandbox escape vulnerability in vm2 allows arbitrary code execution in the host process when untrusted code is executed with async support on runtimes exposing WebAssembly JSPI WebAssembly.promising / WebAssembly.Suspending...