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wasmtime-v43.0.1-i686-windows-c-api.zip (22.1 MB)
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43.0.1
Released 2026-04-09.
Fixed
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Miscompiled guest heap access enables sandbox escape on aarch64 Cranelift. GHSA-jhxm-h53p-jm7w
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Wasmtime with Winch compiler backend may allow a sandbox-escaping memory access. GHSA-xx5w-cvp6-jv83
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Out-of-bounds write or crash when transcoding component model strings. GHSA-394w-hwhg-8vgm
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Host panic when Winch compiler executes
table.fill. GHSA-q49f-xg75-m9xw -
Wasmtime segfault or unused out-of-sandbox load with
f64x2.splatoperator on x86-64. GHSA-qqfj-4vcm-26hv -
Improperly masked return value from
table.growwith Winch compiler backend. GHSA-f984-pcp8-v2p7 -
Panic when transcoding misaligned utf-16 strings. GHSA-jxhv-7h78-9775
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Panic when lifting
flagscomponent value. GHSA-m758-wjhj-p3jq -
Heap OOB read in component model UTF-16 to latin1+utf16 string transcoding. GHSA-hx6p-xpx3-jvvv
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Use-after-free bug after cloning
wasmtime::Linker. GHSA-hfr4-7c6c-48w2 -
Data leakage between pooling allocator instances. GHSA-6wgr-89rj-399p
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Host data leakage with 64-bit tables and Winch. GHSA-m9w2-8782-2946
