{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-97039",
        "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "state": "PUBLISHED",
        "assignerShortName": "Go",
        "dateReserved": "2026-09-23T23:05:04.987Z",
        "datePublished": "2026-11-11T03:13:15.684Z",
        "dateUpdated": "2026-11-11T03:13:15.684Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
                "shortName": "Go",
                "dateUpdated": "2026-11-11T03:13:15.684Z"
            },
            "title": "Flag sanitization bypass via \"#cgo pkg-config:\" directives in cmd/go",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Building a malicious package that uses \"#cgo pkg-config:\" directives could load untrusted pkg-config \".pc\" files or inject unvalidated compiler and linker flags. The pkg-config flag allowlist previously permitted \"--with-path=\" and \"--personality=\", allowed \"--define-variable=\" values beginning with \"=\" or \"$\" (which can rewrite paths in system \".pc\" files into sysroot-prefixed \"-L=\" or \"-L$SYSROOT\" linker search paths), and allowed package arguments ending in \".pc\" or containing path separators or \"..\", which caused pkg-config to load local \".pc\" files directly from the package directory. In addition, flags returned by \"pkg-config --cflags\" in cgoCPPFLAGS were not checked when determining whether internal linking is safe. The go command now disallows \"--with-path=\", \"--personality=\", leading \"=\" or \"$\" characters in \"--define-variable=\" values, and local \".pc\" paths in \"#cgo pkg-config:\" directives, and inspects cgoCPPFLAGS when checking internal linking compatibility."
                }
            ],
            "affected": [
                {
                    "vendor": "Go toolchain",
                    "product": "cmd/go",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "cmd/go",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "1.26.11",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "1.27.0-0",
                            "lessThan": "1.27.4",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://go.dev/cl/862152"
                },
                {
                    "url": "https://go.dev/issue/82571"
                },
                {
                    "url": "https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM"
                },
                {
                    "url": "https://pkg.go.dev/vuln/GO-2026-6852"
                }
            ]
        }
    }
}