{"id":"CVE-2026-58494","revision":"ef47c54281d44ed8b0480f00be9dcc49","records":[{"revision":"ef47c54281d44ed8b0480f00be9dcc49","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-58494","aliases":[],"title":"Wasmtime: WASI hard links bypass wasmtime-wasi's FilePerms for destination","description":"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.","state":0,"publishedAt":"2026-07-08T20:22:16.039+00:00","modifiedAt":"2026-07-09T13:28:57.055+00:00","affected":[{"ecosystem":"Vendor product","name":"wasmtime","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"bytecodealliance\",\n                    \"product\": \"wasmtime\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 24.0.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 25.0.0, < 36.0.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 37.0.0, < 45.0.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 46.0.0, < 46.0.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4ch3-9j33-3pmj","https://github.com/bytecodealliance/wasmtime/commit/5ddfd5f1ef28f2041fa07d237ad0336e167b0e0c","https://github.com/bytecodealliance/wasmtime/commit/7db94cdcf0c79cb3dfde884b534b653f2dd83367","https://github.com/bytecodealliance/wasmtime/commit/8a250aac0962ca1364b5f16525720e9d0b39edcd","https://github.com/bytecodealliance/wasmtime/commit/d3ceb56ec35f39e02496eeb4e2d9c7f4fb964d9e","https://github.com/bytecodealliance/wasmtime/releases/tag/v24.0.11","https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.12","https://github.com/bytecodealliance/wasmtime/releases/tag/v45.0.3","https://github.com/bytecodealliance/wasmtime/releases/tag/v46.0.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-58494","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-58494","identifiers":["CVE-2026-58494"]},"retained":false,"historicalAffected":[]}],"coverage":[]}