{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-115893",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-23T19:37:27.177Z",
        "datePublished": "2026-10-23T21:29:33.917Z",
        "dateUpdated": "2026-10-23T21:29:33.917Z"
    },
    "containers": {
        "cna": {
            "title": "Wasmtime: Cranelift backend on aarch64 can jump to incorrect target on large Wasm `br_table` instruction",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-691",
                            "lang": "en",
                            "description": "CWE-691: Insufficient Control Flow Management",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.9,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-mghf-wjfp-p5xm",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-mghf-wjfp-p5xm"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/pull/14818",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/pull/14818"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/pull/14819",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/pull/14819"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/pull/14820",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/pull/14820"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/pull/14826",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/pull/14826"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/commit/222ff3a65dab9aa7011f8c246937751a0bac5abd",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/commit/222ff3a65dab9aa7011f8c246937751a0bac5abd"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/commit/994549891c8a706cb4f2809f9d17b9f67b31e618",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/commit/994549891c8a706cb4f2809f9d17b9f67b31e618"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/commit/e61df1b454be9313d61a5f8de07722a421139bbe",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/commit/e61df1b454be9313d61a5f8de07722a421139bbe"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/commit/f517bd6e890c7c1291ab9fe05d8cc0c9f11e56aa",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/commit/f517bd6e890c7c1291ab9fe05d8cc0c9f11e56aa"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.19",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.19"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/releases/tag/v48.0.7",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v48.0.7"
                },
                {
                    "name": "https://github.com/bytecodealliance/wasmtime/releases/tag/v49.0.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v49.0.4"
                }
            ],
            "affected": [
                {
                    "vendor": "bytecodealliance",
                    "product": "wasmtime",
                    "versions": [
                        {
                            "version": "< 36.0.19",
                            "status": "affected"
                        },
                        {
                            "version": ">= 37.0.0, < 48.0.7",
                            "status": "affected"
                        },
                        {
                            "version": ">= 49.0.0, < 49.0.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-23T21:29:33.917Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-mghf-wjfp-p5xm",
                "discovery": "UNKNOWN"
            }
        }
    }
}