CVE-2026-115383Medium· 4.8▾ SunlitMis-typed WebAssembly tag imports can lead to GC heap corruption
▾ Sunlit zone — Low / medium · no exploitation signal
impact 26.4 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 24.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.2%
0.2% → 0.2%
This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-cfhf-m2cr-62wj For more information see the GitHub-hosted security advisory.
wasmtime >= 49.0.0, < 49.0.2Upgrade to a patched release:
wasmtime 49.0.2Connected by shared product, vendor, weakness, or advisory.
RUSTSEC-2026-0325NoneMis-typed WebAssembly tag imports can lead to GC heap corruption
CVE-2026-115384Critical· 9.9Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 Stack Buffer Overflow
RUSTSEC-2026-0327NoneWasmtime component async-lifted callback result count is unvalidated, causing a native stack buffer overflow
CVE-2026-115892Medium· 5.7Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type
CVE-2026-115889Critical· 9.9Wasmtime: Bit-packing in Cranelift compiler causes silent overflow and miscompilation
CVE-2026-115893Critical· 9.9Wasmtime: Cranelift backend on aarch64 can jump to incorrect target on large Wasm `br_table` instruction