PT-2026-31685

Wasmtime is a runtime for WebAssembly. Prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1, On x86-64 platforms with SSE3 disabled Wasmtime's compilation of the f64x2.splat WebAssembly instruction with Cranelift may load 8 more bytes than is necessary. When signals-based-traps are disabled this can resul...

wasmtime 缓冲区错误漏洞

Wasmtime is a lightweight WebAssembly runtime open source by the Bytecode Alliance. Versions of Wastime prior to 36.0.7, 42.0.2, and 43.0.1 contained a buffer error vulnerability. This vulnerability stemmed from the pooled allocator using incorrect predicates when resetting virtual memory...

Linux Distros Unpatched Vulnerability : CVE-2026-34988

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Wasmtime is a runtime for WebAssembly. From 28.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's implementation of its pooling allocator contains a bug where...

Linux Distros Unpatched Vulnerability : CVE-2026-34944

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Wasmtime is a runtime for WebAssembly. Prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1, On x86-64 platforms with SSE3 disabled Wasmtime's compilation of the...

Linux Distros Unpatched Vulnerability : CVE-2026-34945

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's Winch compiler contains a bug where a 64-bit table, part of...

Linux Distros Unpatched Vulnerability : CVE-2026-34971

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Wasmtime is a runtime for WebAssembly. From 32.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's Cranelift compilation backend contains a bug on aarch64 when...

Security Bulletin: Denial-of-Service Vulnerability in WebAssembly Micro Runtime (WAMR) LLVM-JIT Mode (≤ v2.4.1) affects watsonx.data

Summary A vulnerability in WebAssembly Micro Runtime WAMR prior to v2.4.2 causes the runtime to hang or crash when executing WebAssembly programs with memory.fill instructions targeting addresses ≥ 2 GiB in LLVM-JIT mode. This can affect watsonx.data. Vulnerability Details CVEID:CVE-2025-58749...

Defending Buffer Overflows in WebAssembly: A Transpiler Approach

WebAssembly is quickly becoming a popular compilation target for a variety of code. However, vulnerabilities in the source languages translate to vulnerabilities in the WebAssembly binaries. This work proposes a methodology and a WebAssembly transpiler to prevent buffer overflows in the unmanaged...

Astra Linux – Vulnerability in Firefox

JIT compilation errors 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

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

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...

Amazon Linux 2023 : firefox (ALAS2023-2026-1470)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1470 advisory. Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox 148, Firefox ESR 115.33, and Firefox ESR 140.8. CVE-2026-2757 Use-after-free in the...

Walma: Learning to See Memory Corruption in WebAssembly

WebAssembly's Wasm monolithic linear memory model facilitates memory corruption attacks that can escalate to cross-site scripting in browsers or go undetected when a malicious host tampers with a module's state. Existing defenses rely on invasive binary instrumentation or custom runtimes, and do...

Weaver: Fuzzing JavaScript Engines at the JavaScript-WebAssembly Boundary

The security of modern JavaScript JS engines is critical since they provide the primary defense mechanism for executing untrusted code on the web. The recent integration of WebAssembly Wasm has transformed these engines into complex polyglot environments, creating a novel attack surface at the...

Important: thunderbird

Issue Overview: Incorrect boundary conditions in the WebRTC: Audio/Video component. This vulnerability affects Firefox 148, Firefox ESR 115.33, and Firefox ESR 140.8. CVE-2026-2757 Use-after-free in the JavaScript: GC component. This vulnerability affects Firefox 148, Firefox ESR 115.33, and...

Join Us at Wasm I/O 2026

Akamai is sponsoring Wasm IO 2026 as part of our commitment to WebAssembly. Get all the details...

The vulnerability of the WebAssembly module of Google Chrome and Microsoft Edge browsers allows a hacker to trigger a service failure.

The vulnerability of the WebAssembly module in Google Chrome and Microsoft Edge is related to access control deficiencies. Exploiting this vulnerability could allow a malicious actor to cause a service failure through a specially crafted HTML page...

OPENSUSE-SU-2026:20365-1 Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues: - Firefox Extended Support Release 140.8.0 ESR bsc1258568 - CVE-2026-2757: Incorrect boundary conditions in the WebRTC: Audio/Video component - CVE-2026-2758: Use-after-free in the JavaScript: GC component - CVE-2026-2759: Incorrect...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : MozillaFirefox (SUSE-SU-2026:0871-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0871-1 advisory. Update to Firefox Extended Support Release 140.8.0 ESR MFSA 2026-15 bsc1258568: - CVE-2026-2757:...