Known Vulnerabilities for Webassembly by W3

Listed below are 1 of the newest known vulnerabilities associated with "Webassembly" by "W3".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-126409 json Wasmtime 47.0.0 before 48.0.8, 49.0.0 before 49.0.5, and 50.0.0 before 50.0.1 contains a cross-engine type confusion vulnerab... Not Provided 2026-11-13 2026-11-13
CVE-2026-120338 json Prefab UI's Generative UI sandbox runs caller-supplied Python inside Pyodide, Python compiled to WebAssembly, in a Deno subpr... Not Provided 2026-11-01 2026-11-02
CVE-2026-119136 json Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains insufficient checks in Store when mixing async-style and sync... Not Provided 2026-10-29 2026-11-03
CVE-2026-119133 json Wasmtime 47.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a memory misalignment flaw in VMContext layout that causes un... Not Provided 2026-10-29 2026-10-29
CVE-2026-119132 json Wasmtime from 49.0.0 before 49.0.3 contains a denial-of-service vulnerability that allows a WebAssembly guest to trigger a ho... Not Provided 2026-10-29 2026-11-03
CVE-2026-117955 json JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, ... Not Provided 2026-10-27 2026-11-05
CVE-2026-115893 json Wasmtime is a runtime for WebAssembly. Prior to 36.0.19, 48.0.7, and 49.0.4, the Cranelift compiler backend on aarch64 can co... Not Provided 2026-10-23 2026-10-29
CVE-2026-115892 json Wasmtime is a runtime for WebAssembly. From 46.0.0 until 48.0.7 and 49.0.4, lowering a host-created component-model stream or... Not Provided 2026-10-23 2026-10-29
CVE-2026-115889 json Wasmtime is a runtime for WebAssembly. Prior to 36.0.19 and 43.0.0, the Cranelift compiler backend bit-packs SSA value indice... Not Provided 2026-10-23 2026-10-26
CVE-2026-115389 json Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 does not adequately account for host allocations when... Not Provided 2026-10-22 2026-10-29
Results limited to 10 most recent vulnerabilities

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