{"id":"CVE-2026-34971","aliases":["RUSTSEC-2026-0096","GHSA-jhxm-h53p-jm7w"],"title":"Miscompiled guest heap access enables sandbox escape on aarch64 Cranelift","summary":"Miscompiled guest heap access enables sandbox escape on aarch64 Cranelift","severity":"none","vendor":"wasmtime","product":"wasmtime","ecosystem":"rust","affected":["wasmtime >= 43.0.0, < 43.0.1"],"patched":["wasmtime 43.0.1"],"published":"2026-04-09","updated":"2026-10-12","sourceUpdated":"2026-10-12T18:00:13.049981565Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0096","references":[{"url":"https://crates.io/crates/wasmtime"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0096.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/13013"}],"tags":["osv","rust"],"epss":0.00388,"epssPercentile":0.30919,"ingestedAt":"2026-10-13T11:45:30.189Z","slug":"CVE-2026-34971","body":"## Overview\n\nThis is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w\nFor more information see the GitHub-hosted security advisory.\n\n## Affected packages\n\n- `wasmtime >= 43.0.0, < 43.0.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `wasmtime 43.0.1`","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}