{"id":"RUSTSEC-2026-0422","aliases":["GHSA-3982-jqvv-277m"],"title":"Typed functions with `i31` or `nullref` arguments may panic due to insufficient type-check","summary":"Typed functions with `i31` or `nullref` arguments may panic due to insufficient type-check","severity":"low","cvss":1.8,"cvssVector":"CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L","vendor":"wasmtime","product":"wasmtime","ecosystem":"rust","affected":["wasmtime >= 50.0.0, < 50.0.1"],"patched":["wasmtime 50.0.1"],"published":"2026-10-29","updated":"2026-10-30","sourceUpdated":"2026-10-30T10:45:03.669147671Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0422","references":[{"url":"https://crates.io/crates/wasmtime"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0422.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/15076"}],"tags":["osv","rust"],"ingestedAt":"2026-10-30T19:05:36.530Z","slug":"RUSTSEC-2026-0422","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-3982-jqvv-277m\nFor more information see the GitHub-hosted security advisory.\n\n## Affected packages\n\n- `wasmtime >= 50.0.0, < 50.0.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `wasmtime 50.0.1`","depth":"sunlit","depthScore":10,"depthScoreParts":{"impact":9.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}