CVE-2026-97034

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97034", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-09-23T23:04:46.550Z", "datePublished": "2026-11-11T03:13:17.194Z", "dateUpdated": "2026-11-11T03:13:17.194Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-11-11T03:13:17.194Z"}, "title": "Arbitrary command execution via GCC spec files in cgo linker search directories in cmd/go", "descriptions": [{"lang": "en", "value": "When using GCC, building a malicious package that uses cgo could cause arbitrary command execution at link time via untrusted GCC spec files (\"specs\" or \"*.spec\"). When linking with \"-fopenmp\", \"-fopenacc\", or \"-fsanitize=\" in \"#cgo LDFLAGS\", GCC's built-in link spec evaluates \"%:include(libgomp.spec)\" or \"%:include(libsanitizer.spec)\" and searches for spec files in \"-L\" and sysroot directories (including subdirectories and multilib sibling directories such as \"../lib64\"), as well as the working directory when \"-fopenmp\" or \"-fopenacc\" is used or when \"-fsanitize=\" is combined with \"-static\" or \"-static-lib*\". The go command now rejects \"-L\", \"-isysroot\", and \"-Wl,-syslibroot\" directories (and the working and package directories when applicable) that contain GCC spec files, and disallows \"@\" and \"-\" prefixes in \"-fsanitize=\" compiler flag values."}], "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-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')"}]}], "references": [{"url": "https://go.dev/cl/862147"}, {"url": "https://go.dev/issue/82576"}, {"url": "https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM"}, {"url": "https://pkg.go.dev/vuln/GO-2026-6857"}]}}}

{}

{"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": "When using GCC, building a malicious package that uses cgo could cause arbitrary command execution at link time via untrusted GCC spec files (\"specs\" or \"*.spec\"). When linking with \"-fopenmp\", \"-fopenacc\", or \"-fsanitize=\" in \"#cgo LDFLAGS\", GCC's built-in link spec evaluates \"%:include(libgomp.spec)\" or \"%:include(libsanitizer.spec)\" and searches for spec files in \"-L\" and sysroot directories (including subdirectories and multilib sibling directories such as \"../lib64\"), as well as the working directory when \"-fopenmp\" or \"-fopenacc\" is used or when \"-fsanitize=\" is combined with \"-static\" or \"-static-lib*\". The go command now rejects \"-L\", \"-isysroot\", and \"-Wl,-syslibroot\" directories (and the working and package directories when applicable) that contain GCC spec files, and disallows \"@\" and \"-\" prefixes in \"-fsanitize=\" compiler flag values."}], "id": "CVE-2026-97034", "lastModified": "2026-11-12T22:09:39.233", "metrics": {}, "published": "2026-11-11T05:19:57.397", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/862147"}, {"source": "security@golang.org", "url": "https://go.dev/issue/82576"}, {"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-2026-6857"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Awaiting Analysis"}

{}

{"created": "2026-11-12T05:45:21.852701+00:00", "updated": "2026-11-14T03:30:03.608998+00:00", "vendors": [], "weaknesses": ["CWE-94"]}