{"id":"CVE-2026-34946","aliases":["RUSTSEC-2026-0089","GHSA-q49f-xg75-m9xw"],"title":"Host panic when Winch compiler executes `table.fill`","summary":"Host panic when Winch compiler executes `table.fill`","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":"2026-10-12T18:00:13.553340442Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0089","references":[{"url":"https://crates.io/crates/wasmtime"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0089.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/13010"}],"tags":["osv","rust"],"epss":0.00424,"epssPercentile":0.34846,"ingestedAt":"2026-10-13T11:45:30.186Z","slug":"CVE-2026-34946","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-q49f-xg75-m9xw\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":[]}