CVE-2026-97033

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97033", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-09-23T23:04:33.594Z", "datePublished": "2026-11-11T03:13:17.601Z", "dateUpdated": "2026-11-11T03:13:17.601Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-11-11T03:13:17.601Z"}, "title": "Unexpected code execution via --sysroot, -target, -isysroot, -Wl,-syslibroot, and -x cgo flags in cmd/go", "descriptions": [{"lang": "en", "value": "Building a malicious package that uses cgo could cause arbitrary code execution at build time through several compiler and linker flags permitted in \"#cgo\" directives. Specifically, \"--sysroot\" in GCC and Clang relocates compiler subprograms, spec files, and CRT startup objects to an attacker-controlled directory; \"-target\" in Clang falls back to executing target helper tools from the current working directory when not found in PATH; \"-isysroot\" and \"-Wl,-syslibroot\" can pass a regular file on disk to GNU ld.bfd, which interprets it as a positional linker script; and \"-x\" permitted specifying arbitrary compiler input languages beyond those supported by cgo. \"--sysroot\" and \"-target\" are now disallowed in \"#cgo\" flags, \"-isysroot\" and \"-Wl,-syslibroot\" are verified not to point to regular files, and \"-x\" is restricted to the C, C++, Objective-C, and assembler languages supported by cgo."}], "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/862146"}, {"url": "https://go.dev/issue/82577"}, {"url": "https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM"}, {"url": "https://pkg.go.dev/vuln/GO-2026-6858"}]}}}

{}

{"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 could cause arbitrary code execution at build time through several compiler and linker flags permitted in \"#cgo\" directives. Specifically, \"--sysroot\" in GCC and Clang relocates compiler subprograms, spec files, and CRT startup objects to an attacker-controlled directory; \"-target\" in Clang falls back to executing target helper tools from the current working directory when not found in PATH; \"-isysroot\" and \"-Wl,-syslibroot\" can pass a regular file on disk to GNU ld.bfd, which interprets it as a positional linker script; and \"-x\" permitted specifying arbitrary compiler input languages beyond those supported by cgo. \"--sysroot\" and \"-target\" are now disallowed in \"#cgo\" flags, \"-isysroot\" and \"-Wl,-syslibroot\" are verified not to point to regular files, and \"-x\" is restricted to the C, C++, Objective-C, and assembler languages supported by cgo."}], "id": "CVE-2026-97033", "lastModified": "2026-11-12T22:09:39.233", "metrics": {}, "published": "2026-11-11T05:19:57.253", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/862146"}, {"source": "security@golang.org", "url": "https://go.dev/issue/82577"}, {"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-2026-6858"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Awaiting Analysis"}

{}

{"created": "2026-11-12T05:45:21.852397+00:00", "updated": "2026-11-12T23:45:10.995073+00:00", "vendors": [], "weaknesses": ["CWE-20", "CWE-94"]}