2339 matches found
CVE-2026-34943
Wasmtime is a runtime for WebAssembly. Prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1, Wasmtime contains a possible panic which can happen when a flags-typed component model value is lifted with the Val type. If bits are set outside of the set of flags the component model specifies that these bits...
CVE-2026-34942
Wasmtime is a runtime for WebAssembly. Prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1, Wasmtime's implementation of transcoding strings into the Component Model's utf16 or latin1+utf16 encodings improperly verified the alignment of reallocated strings. This meant that unaligned pointers could be...
CVE-2026-34941
Wasmtime is a runtime for WebAssembly. Prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1, Wasmtime contains a vulnerability where when transcoding a UTF-16 string to the latin1+utf16 component-model encoding it would incorrectly validate the byte length of the input string when performing a bounds chec...
CVE-2026-34941
Wasmtime (WebAssembly runtime) contains a heap OOB read during transcoding of UTF-16 to the latin1+utf16 component-model encoding. The bug stems from validating the input length by code units instead of by byte length, causing reads beyond the WebAssembly linear memory during bounds checking. In ...
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...
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...
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...
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...
PT-2026-31684
Name of the Vulnerable Software and Affected Versions Wasmtime versions prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1 Description Wasmtime, a runtime for WebAssembly, may experience a panic when a flags-typed component model value is lifted with the Val type. This occurs if bits are set outside the...
wasmtime 缓冲区错误漏洞
Wasmtime is a lightweight WebAssembly runtime open source by the Bytecode Alliance. Versions prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1 of Wastime contain a buffer error vulnerability. This vulnerability arises from incorrectly verifying the number of code units rather than the byte length when...
PT-2026-31689
Wasmtime is a runtime for WebAssembly. In 43.0.0, cloning a wasmtime::Linker is unsound and can result in use-after-free bugs. This bug is not controllable by guest Wasm programs. It can only be triggered by a specific sequence of embedder API calls made by the host. Specifically, the following...
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...
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...
