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Vulnerabilities of bytecodealliance wasmtime

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CVE Summary Score Published
CVE-2026-121440 Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 fails to check forwarded trailers against the… 6.3 Medium Nov 3, 2026
CVE-2026-121441 Wasmtime before 36.0.19, 37.0.0 before 48.0.7, and 49.0.0 before 49.0.4 contains a request smuggling vulnerability in… 6.3 Medium Nov 3, 2026
CVE-2026-121439 Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 contains a response splitting vulnerability in wasi-http p3… 6.9 Medium Nov 3, 2026
CVE-2026-119142 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability where dropping the… 5.9 Medium Oct 29, 2026
CVE-2026-119143 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Panic via Zero-Length Stream Writes 5.9 Medium Oct 29, 2026
CVE-2026-119141 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows… 6.9 Medium Oct 29, 2026
CVE-2026-119140 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows… 5.9 Medium Oct 29, 2026
CVE-2026-119139 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Host Panic via Func::call 5.9 Medium Oct 29, 2026
CVE-2026-119138 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows pending… 5.9 Medium Oct 29, 2026
CVE-2026-119137 Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a stack overflow vulnerability that allows guests to… 6.9 Medium Oct 29, 2026
CVE-2026-119136 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… 5.9 Medium Oct 29, 2026
CVE-2026-119134 Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps component-model resource handle tables only… 6.9 Medium Oct 29, 2026
CVE-2026-119135 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Panic via StreamReader Type Mismatch 5.9 Medium Oct 29, 2026
CVE-2026-119133 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… 2.1 Low Oct 29, 2026
CVE-2026-119132 Wasmtime from 49.0.0 before 49.0.3 contains a denial-of-service vulnerability that allows a WebAssembly guest to trigger… 5.9 Medium Oct 29, 2026
CVE-2026-119130 Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 does not verify that set-path-with-query… 2.1 Low Oct 29, 2026
CVE-2026-119131 Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Host Panic via wasi-http 6.9 Medium Oct 29, 2026
CVE-2026-118688 Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 Sandbox Escape via Symlink Rename 8.8 High Oct 28, 2026
CVE-2026-115893 Wasmtime is a runtime for WebAssembly 9.9 Critical Oct 23, 2026
CVE-2026-115892 Wasmtime is a runtime for WebAssembly 5.7 Medium Oct 23, 2026
CVE-2026-115889 Wasmtime is a runtime for WebAssembly 9.9 Critical Oct 23, 2026
CVE-2026-115393 Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 contains a type confusion… 1.0 Low Oct 22, 2026
CVE-2026-115392 Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 allows a filesystem… 8.8 High Oct 22, 2026
CVE-2026-115391 Wasmtime 46.0.0 before 46.0.3 and 47.0.0 before 47.0.4 Unbounded Heap Allocation via WASIp3 Streams 6.9 Medium Oct 22, 2026
CVE-2026-115389 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… 1.0 Low Oct 22, 2026

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