{"id":"CVE-2026-44216","revision":"9416a4de936a4d618cf2e61a3133e2f7","records":[{"revision":"9416a4de936a4d618cf2e61a3133e2f7","observedAt":"2026-10-27T11:12:09.678+00:00","statement":{"source":"nvd","id":"CVE-2026-44216","aliases":[],"title":"Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked on overflow. This overflow is possible to trigger, and thus pa…","description":"Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked on overflow. This overflow is possible to trigger, and thus panic, when a table with an extremely large size is allocated. This is possible with the WebAssembly memory64 proposal where tables can have sizes in the 64-bit range as opposed to the previous 32-bit range which would not overflow. The panic happens when attempting to create a very large table, such as when instantiating a WebAssembly module or component. This vulnerability is fixed in 36.0.8, 43.0.2, and 44.0.1.","state":0,"publishedAt":"2026-05-14T15:16:47.793+00:00","modifiedAt":"2026-10-26T14:10:00.13+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"},{"system":"CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-p8xm-42r7-89xg","https://access.redhat.com/errata/RHSA-2026:45341","https://access.redhat.com/security/cve/CVE-2026-44216","https://bugzilla.redhat.com/show_bug.cgi?id=2477467","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44216.json"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44216","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-770","CWE-190"],"productCriteria":["cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*","cpe:2.3:a:bytecodealliance:wasmtime:44.0.0:*:*:*:*:rust:*:*"],"sourceDates":{"published":"2026-05-14T15:16:47.793","lastModified":"2026-10-26T14:10:00.130"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-44216","identifiers":["CVE-2026-44216"]},"retained":false,"historicalAffected":[]}],"coverage":[]}