{"affected":[{"defaultStatus":"unaffected","ecosystem":"https://pkg.go.dev","packageName":"cmd/go","product":"cmd/go","source":"CNA: 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"}]}],"cveId":"CVE-2026-97033","cwes":["CWE-77"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[],"modifiedAt":1794366797601,"publishedAt":1794366797601,"references":[{"source":"CNA: Go","tags":[],"url":"https://go.dev/cl/862146"},{"source":"CNA: Go","tags":[],"url":"https://go.dev/issue/82577"},{"source":"CNA: Go","tags":[],"url":"https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM"},{"source":"CNA: Go","tags":[],"url":"https://pkg.go.dev/vuln/GO-2026-6858"}],"remediation":[],"revision":"9fc18a8b1d34944254217f2e8a98db8a51b7ddce12efb1e99fd0cf37aedde8c8","sources":[{"modifiedAt":1794366797601,"name":"CNA: Go","retrievedAt":1794370191153,"url":"https://www.cve.org/CVERecord?id=CVE-2026-97033"}],"ssvc":null,"status":"published","title":"Unexpected code execution via --sysroot, -target, -isysroot, -Wl,-syslibroot, and -x cgo flags in cmd/go","updatedAt":1794370191153}