Out-of-bounds Read in Bytecodealliance Wasmtime
CVE-2026-34971
Wasmtime is a runtime for WebAssembly. From 32.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's Cranelift compilation backend contains a bug on aarch64 when performing a certain shape of heap accesses which means that the wrong address…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (3.6th percentile) — read the EPSS interpretation.
Affected products
- Bytecodealliance Wasmtime — versions >= 32.0.0, < 36.0.7, >= 37.0.0, < 42.0.2, >= 43.0.0, < 44.0.1
Weakness classification (CWE)
References
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w (x_refsource_CONFIRM)