CVE-2026-97039

{"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"}]}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://pkg.go.dev", "defaultStatus": "unaffected", "packageName": "cmd/go", "product": "cmd/go", "vendor": "Go toolchain", "versions": [{"lessThan": "1.26.11", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "1.27.4", "status": "affected", "version": "1.27.0-0", "versionType": "semver"}]}], "source": "security@golang.org"}], "cveTags": [], "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."}], "id": "CVE-2026-97039", "lastModified": "2026-11-12T22:09:39.233", "metrics": {}, "published": "2026-11-11T05:19:58.133", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/862152"}, {"source": "security@golang.org", "url": "https://go.dev/issue/82571"}, {"source": "security@golang.org", "url": "https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM"}, {"source": "security@golang.org", "url": "https://pkg.go.dev/vuln/GO-2026-6852"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Awaiting Analysis"}

{}

{"created": "2026-11-12T06:30:21.981358+00:00", "updated": "2026-11-14T03:30:03.611864+00:00", "vendors": [], "weaknesses": ["CWE-20"]}