{"api_version":"1","generated_at":"2026-10-23T23:41:12+00:00","cve":"CVE-2026-115892","urls":{"html":"https://cve.report/CVE-2026-115892","api":"https://cve.report/api/cve/CVE-2026-115892.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-115892","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115892"},"summary":{"title":"Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type","description":"Wasmtime is a runtime for WebAssembly. From 46.0.0 until 48.0.7 and 49.0.4, lowering a host-created component-model stream or future into a guest can omit a required payload-type check after the value passes through guest code and returns through StreamAny, FutureAny, Val::Stream, Val::Future, or an equivalent typed reader. A malicious guest that controls exported function types or returned values can cause the host to pass the type-erased value to a guest expecting a different payload type, which panics the Wasmtime host. This issue is fixed in versions 48.0.7 and 49.0.4.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-10-23 22:16:58","updated_at":"2026-10-23 22:16:58"},"problem_types":["CWE-248","CWE-843","CWE-843 CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')","CWE-248 CWE-248: Uncaught 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Panic lowering a host-created component model stream i","CVE":"CVE-2026-115892","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"115892","Ordinal":"1","NoteData":"Wasmtime is a runtime for WebAssembly. From 46.0.0 until 48.0.7 and 49.0.4, lowering a host-created component-model stream or future into a guest can omit a required payload-type check after the value passes through guest code and returns through StreamAny, FutureAny, Val::Stream, Val::Future, or an equivalent typed reader. A malicious guest that controls exported function types or returned values can cause the host to pass the type-erased value to a guest expecting a different payload type, which panics the Wasmtime host. This issue is fixed in versions 48.0.7 and 49.0.4.","Type":"Description","Title":"Wasmtime: Panic lowering a host-created component model stream i"}]}}}