CVE-2026-119135

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{"bugzilla": {"description": "wasmtime: Wasmtime: Denial of Service via component stream type mismatch", "id": "2563479", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563479"}, "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-617", "details": ["A flaw was found in Wasmtime. This vulnerability allows a guest WebAssembly module to cause a Denial of Service (DoS) by crashing the host application. When the host reads a component model stream that uses a mismatched internal data type, an assertion failure triggers an unhandled panic instead of returning an error, terminating the embedding process."], "name": "CVE-2026-119135", "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": "2026-10-29T15:58:15Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-119135\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-119135\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-63h4-6cx9-pjfj\nhttps://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.6-and-49.0.0-before-49.0.3-panic-via-streamreader-type-mismatch"], "threat_severity": "Moderate"}

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