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Vendor archive

bytecodealliance CVEs

Beta · best-effort

54 CVEs tagged to vendor bytecodealliance3 Critical, 10 High, 26 Medium, 15 Low, 0 Unrated.

CVE-2026-54786

Published Jul 1, 2026

Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0…

CVSS 2.3 · Low
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-47261

Published Jun 15, 2026

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::…

CVSS 7.5 · High
evidence mentions
5
Buzz score
22.9
Vendor/product tagsBeta · best-effort

CVE-2026-44216

Published May 14, 2026

Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked o…

CVSS 5.9 · Medium
evidence mentions
6
Buzz score
32.5
Vendor/product tagsBeta · best-effort

CVE-2026-35195

Published Apr 9, 2026

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 between components contains a bug where the re…

CVSS 6.1 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-35186

Published Apr 9, 2026

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 backend contains a bug where translating the table.grow operator…

CVSS 6.1 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34988

Published Apr 9, 2026

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 in certain configu…

CVSS 2.3 · Low
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34987

Published Apr 9, 2026

Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime with its Winch (baseline) non-default compiler backend may allow properly constru…

CVSS 9.0 · Critical
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34983

Published Apr 9, 2026

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.…

CVSS 1.0 · Low
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34971

Published Apr 9, 2026

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 performing a certa…

CVSS 9.0 · Critical
evidence mentions
4
Buzz score
29.1
Vendor/product tagsBeta · best-effort

CVE-2026-34946

Published Apr 9, 2026

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 vulnerability where the compilation of the table.fill…

CVSS 5.9 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34945

Published Apr 9, 2026

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 the memory64 propos…

CVSS 2.3 · Low
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34944

Published Apr 9, 2026

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 in…

CVSS 4.1 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34943

Published Apr 9, 2026

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…

CVSS 5.6 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34942

Published Apr 9, 2026

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+utf…

CVSS 5.9 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-34941

Published Apr 9, 2026

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 co…

CVSS 6.9 · Medium
evidence mentions
1
Buzz score
11.9
Vendor/product tagsBeta · best-effort

CVE-2026-27572

Published Feb 24, 2026

Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime's implementation of the `wasi:http/types.fields` resource is suscepti…

CVSS 6.9 · Medium
evidence mentions
7
Buzz score
30.8
Vendor/product tagsBeta · best-effort

CVE-2026-27204

Published Feb 24, 2026

Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime's implementation of WASI host interfaces are susceptible to guest-con…

CVSS 6.9 · Medium
evidence mentions
7
Buzz score
35.8
Vendor/product tagsBeta · best-effort

CVE-2026-27195

Published Feb 24, 2026

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 `[Typed…

CVSS 6.9 · Medium
evidence mentions
6
Buzz score
29.5
Vendor/product tagsBeta · best-effort

CVE-2026-24116

Published Jan 27, 2026

Wasmtime is a runtime for WebAssembly. Starting in version 29.0.0 and prior to version 36.0.5, 40.0.3, and 41.0.1, on x86-64 platforms with AVX, Wasmtime's compilation of the `f64…

CVSS 4.1 · Medium
evidence mentions
8
Buzz score
38.5
Vendor/product tagsBeta · best-effort

CVE-2025-64713

Published Nov 25, 2025

WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to version 2.4.4, an out-of-bounds array access issue exists in WAMR's fast interpre…

CVSS 5.1 · Medium
Vendor/product tagsBeta · best-effort

CVE-2025-64704

Published Nov 25, 2025

WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to version 2.4.4, WAMR is susceptible to a segmentation fault in v128.store instruct…

CVSS 4.7 · Medium
Vendor/product tagsBeta · best-effort

CVE-2025-62711

Published Oct 24, 2025

Wasmtime is a runtime for WebAssembly. In versions from 38.0.0 to before 38.0.3, the implementation of component-model related host-to-wasm trampolines in Wasmtime contained a bug…

CVSS 2.1 · Low
Vendor/product tagsBeta · best-effort

CVE-2025-61670

Published Oct 7, 2025

Wasmtime is a runtime for WebAssembly. Wasmtime 37.0.0 and 37.0.1 have memory leaks in the C/C++ API when using bindings for the `anyref` or `externref` WebAssembly values. This i…

CVSS 1.0 · Low
Vendor/product tagsBeta · best-effort

CVE-2025-54126

Published Jul 29, 2025

The WebAssembly Micro Runtime's (WAMR) iwasm package is the executable binary built with WAMR VMcore which supports WebAssembly System Interface (WASI) and command line interface.…

CVSS 6.9 · Medium
Vendor/product tagsBeta · best-effort
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