{"id":"CVE-2026-119136","revision":"742c346cd2e74aa1989dccb20d01e6d7","records":[{"revision":"742c346cd2e74aa1989dccb20d01e6d7","observedAt":"2026-11-03T16:57:17.02+00:00","statement":{"source":"cve-program","id":"CVE-2026-119136","aliases":[],"title":"Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Async-Entrypoint Enforcement Bypass","description":"Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains insufficient checks in Store when mixing async-style and sync-style WebAssembly calls. Embedders re-entering WebAssembly via sync APIs from host functions called asynchronously can trigger runtime panics or unsound cross-thread movement of !Send host variables.","state":0,"publishedAt":"2026-10-29T15:58:16.692+00:00","modifiedAt":"2026-11-03T15:59:56.893+00:00","affected":[{"ecosystem":"Vendor product","name":"wasmtime","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"bytecodealliance\",\n                    \"product\": \"wasmtime\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:cargo/wasmtime\",\n                    \"versions\": [\n                        {\n                            \"version\": \"42.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"48.0.6\"\n                        },\n                        {\n                            \"version\": \"48.0.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"49.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"49.0.3\"\n                        },\n                        {\n                            \"version\": \"49.0.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H","score":4.8,"severity":"MEDIUM"}],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-vcg5-q8m5-8379","https://www.vulncheck.com/advisories/wasmtime-42.0.0-before-48.0.6-and-49.0.0-before-49.0.3-async-entrypoint-enforcement-bypass"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119136","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-119136","identifiers":["CVE-2026-119136"]},"retained":false,"historicalAffected":[]}],"coverage":[]}