{"id":"CVE-2026-115893","revision":"7610e92341c142c5b9529a3c40d979a1","records":[{"revision":"7610e92341c142c5b9529a3c40d979a1","observedAt":"2026-10-25T05:17:25.909+00:00","statement":{"source":"nvd","id":"CVE-2026-115893","aliases":[],"title":"Wasmtime is a runtime for WebAssembly. Prior to 36.0.19, 48.0.7, and 49.0.4, the Cranelift compiler backend on aarch64 can compile a Wasm br_table instruction with more than approximately 256,000 targets so that it has an incorrect conditio…","description":"Wasmtime is a runtime for WebAssembly. Prior to 36.0.19, 48.0.7, and 49.0.4, the Cranelift compiler backend on aarch64 can compile a Wasm br_table instruction with more than approximately 256,000 targets so that it has an incorrect conditional branch target. The branch can then jump to arbitrary other code at a user-controlled offset, allowing a user-controlled Wasm module to escape the sandbox on aarch64 engines using the default Cranelift backend. This issue is fixed in versions 36.0.19, 48.0.7, and 49.0.4.","state":0,"publishedAt":"2026-10-23T22:16:58.82+00:00","modifiedAt":"2026-10-23T22:16:58.947+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":"CRITICAL"}],"references":["https://github.com/bytecodealliance/wasmtime/commit/222ff3a65dab9aa7011f8c246937751a0bac5abd","https://github.com/bytecodealliance/wasmtime/commit/994549891c8a706cb4f2809f9d17b9f67b31e618","https://github.com/bytecodealliance/wasmtime/commit/e61df1b454be9313d61a5f8de07722a421139bbe","https://github.com/bytecodealliance/wasmtime/commit/f517bd6e890c7c1291ab9fe05d8cc0c9f11e56aa","https://github.com/bytecodealliance/wasmtime/pull/14818","https://github.com/bytecodealliance/wasmtime/pull/14819","https://github.com/bytecodealliance/wasmtime/pull/14820","https://github.com/bytecodealliance/wasmtime/pull/14826","https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.19","https://github.com/bytecodealliance/wasmtime/releases/tag/v48.0.7","https://github.com/bytecodealliance/wasmtime/releases/tag/v49.0.4","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-mghf-wjfp-p5xm"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-115893","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-691"],"productCriteria":[],"sourceDates":{"published":"2026-10-23T22:16:58.820","lastModified":"2026-10-23T22:16:58.947"},"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-2026-115893","identifiers":["CVE-2026-115893"]},"retained":false,"historicalAffected":[]}],"coverage":[]}