{"id":"CVE-2026-115393","summary":"Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 Cross-Engine Type Confusion","details":"Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 contains a type confusion vulnerability because several Store APIs fail to validate that objects belong to the Store's Engine. Embedders mixing objects between Engines via Instance::new, StructRefPre::new, or Tag::new can trigger trampoline signature mismatches causing out-of-bounds stack writes, GC heap corruption, or panics.","aliases":["GHSA-hgjw-h833-99q9","RUSTSEC-2026-0222"],"modified":"2026-10-31T02:30:46.299924784Z","published":"2026-10-22T19:13:59.314Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-787"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115393.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115393.json"},{"type":"ADVISORY","url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hgjw-h833-99q9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115393"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wasmtime-before-24.0.12-25.0.0-before-36.0.13-37.0.0-before-46.0.2-and-47.0.0-before-47.0.3-cross-engine-type-confusion"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bytecodealliance/wasmtime","events":[{"introduced":"0"},{"fixed":"75662c3f090efb8f153ac1135077a85cb9aa2380"},{"introduced":"0b195ef5db76c02fb5392ec1418c58bdc5537d41"},{"fixed":"f65ae51bc2527490a5cd8fde805ea9754b81be1f"},{"introduced":"7b3d6ae79e9153a2477668062f5622c10333925f"},{"fixed":"4f87260abb0b64a6f0654a396551240edd270b71"},{"introduced":"39d67168cdb6911ffdc961381314b6fed62e3c93"},{"fixed":"5554cc1a651da536af2cc46c7324bdc085b162e3"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"0"},{"fixed":"24.0.12"}]},{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"25.0.0"},{"fixed":"36.0.13"}]},{"strategy":"StandardRange","range":[{"introduced":"37.0.0"},{"fixed":"46.0.2"}],"source":"AFFECTED_FIELD"},{"range":[{"introduced":"47.0.0"},{"fixed":"47.0.3"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}}],"versions":["v46.0.1","v47.0.2","v36.0.12","v24.0.11","v47.0.1","v47.0.0","v36.0.11","v24.0.10","v46.0.0","v24.0.9","v36.0.10","v36.0.9","v24.0.8","v36.0.8","v36.0.7","v24.0.7","v36.0.6","v24.0.6","v36.0.5","dev","v36.0.4","v24.0.5","v36.0.3","v36.0.2","v24.0.4","v36.0.1","v36.0.0","v24.0.3","v24.0.2","v24.0.1","v24.0.0","v0.35.0","v0.33.0","v0.34.0","v0.32.0","v0.31.0","v0.30.0","v0.29.0","v0.28.0","v0.27.0","v0.26.0","v0.25.0","v0.24.0","v0.23.0","v0.22.0","cranelift-v0.69.0","v0.21.0","v0.20.0","v0.19.0","v0.18.0","v0.17.0","v0.16.0","cranelift-v0.61.0","cranelift-v0.60.0","v0.12.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115393.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"}]}