RUSTSEC-2026-0380

vendorUSosv

Bit-packing in Cranelift compiler causes silent overflow and miscompilation

view advisory published 2026-10-19Licence: CC0-1.0

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-897f-g5gm-fmxm For more information see the GitHub-hosted security advisory.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-115889US	—	0.45% (39th)	Exploit	2026-10-23
Wasmtime is a runtime for WebAssembly. Prior to 36.0.19 and 43.0.0, the Cranelift compiler backend bit-packs SSA value indices in a way that can silently overflow in release builds…

references

External citations — patches, advisories, analysis.

https://crates.io/crates/wasmtimePACKAGE
https://github.com/bytecodealliance/wasmtime/pull/12613WEB
https://rustsec.org/advisories/RUSTSEC-2026-0380.htmlADVISORY

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan