CVE-2026-58494

{"id": "CVE-2026-58494", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-58494", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-09T13:28:46.718754Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.0}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "bytecodealliance", "product": "wasmtime", "versions": [{"status": "affected", "version": "< 24.0.11"}, {"status": "affected", "version": ">= 25.0.0, < 36.0.12"}, {"status": "affected", "version": ">= 37.0.0, < 45.0.3"}, {"status": "affected", "version": ">= 46.0.0, < 46.0.1"}]}]}], "published": "2026-07-08T21:16:54.000", "references": [{"url": "https://github.com/bytecodealliance/wasmtime/commit/5ddfd5f1ef28f2041fa07d237ad0336e167b0e0c", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/commit/7db94cdcf0c79cb3dfde884b534b653f2dd83367", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/commit/8a250aac0962ca1364b5f16525720e9d0b39edcd", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/commit/d3ceb56ec35f39e02496eeb4e2d9c7f4fb964d9e", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v24.0.11", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.12", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v45.0.3", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v46.0.1", "source": "security-advisories@github.com"}, {"url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4ch3-9j33-3pmj", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-281"}, {"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Wasmtime is a runtime for WebAssembly. Prior to 24.0.11, 36.0.12, 45.0.3, and 46.0.1, wasmtime-wasi hard-link creation and renaming check directory permissions but not matching FilePerms on source and destination preopens, allowing a WASI guest with a read-only source file capability to overwrite host files exposed as FilePerms::READ through wasip1, wasip2, or wasip3 filesystem interfaces. This issue is fixed in versions 24.0.11, 36.0.12, 45.0.3, and 46.0.1."}, {"lang": "es", "value": "Wasmtime es un tiempo de ejecuci\u00f3n para WebAssembly. Antes de las versiones 24.0.11, 36.0.12, 45.0.3 y 46.0.1, la creaci\u00f3n y el renombramiento de enlaces duros de wasmtime-wasi comprueban los permisos de directorio, pero no los FilePerms coincidentes en las preaperturas de origen y destino, lo que permite a un invitado WASI con una capacidad de archivo de origen de solo lectura sobrescribir archivos del host expuestos como FilePerms::READ a trav\u00e9s de las interfaces del sistema de archivos wasip1, wasip2 o wasip3. Este problema est\u00e1 solucionado en las versiones 24.0.11, 36.0.12, 45.0.3 y 46.0.1."}], "lastModified": "2026-10-25T17:10:00.197", "sourceIdentifier": "security-advisories@github.com"}