CVE-2026-115391Medium· 5.8▾ SunlitGuest controlled-size host heap allocation through WASIp3 streams
▾ Sunlit zone — Low / medium · no exploitation signal
impact 31.9 · 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%
This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-x84v-gj2h-g759 For more information see the GitHub-hosted security advisory.
wasmtime >= 47.0.0, < 47.0.4Upgrade to a patched release:
wasmtime 47.0.4Connected by shared product, vendor, weakness, or advisory.
RUSTSEC-2026-0268NoneGuest controlled-size host heap allocation through WASIp3 streams
CVE-2026-115389Low· 2.3Dynamic record lifting can allocate beyond the hostcall fuel limit
CVE-2026-44216High· 7.5Wasmtime is a runtime for WebAssembly
CVE-2026-115892Medium· 5.7Panic 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