CVE-2026-119136

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{"bugzilla": {"description": "wasmtime: wasmtime: Denial of Service via mixed synchronous and asynchronous calls", "id": "2563552", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563552"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1265", "details": ["A flaw was found in Wasmtime. Insufficient validation occurs in the Store component when mixing asynchronous and synchronous WebAssembly function calls. When an application re-enters WebAssembly through synchronous interfaces from an asynchronous host function, an attacker could trigger a runtime panic, resulting in a Denial of Service (DoS), or cause thread-unsafe data to be moved across threads."], "name": "CVE-2026-119136", "package_state": [{"cpe": "cpe:/a:redhat:connectivity_link:1", "fix_state": "Fix deferred", "package_name": "rhcl-1/wasm-shim-rhel9", "product_name": "Red Hat Connectivity Link 1"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "tree-sitter", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "virt-firmware-rs", "product_name": "Red Hat Enterprise Linux 10"}], "public_date": "2026-10-29T15:58:16Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-119136\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-119136\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-vcg5-q8m5-8379\nhttps://www.vulncheck.com/advisories/wasmtime-42.0.0-before-48.0.6-and-49.0.0-before-49.0.3-async-entrypoint-enforcement-bypass"], "threat_severity": "Moderate"}

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