{"id":"GO-2026-6857","revision":null,"records":[{"revision":"d630140d437e4a85a7bacc7ebf7695b6","observedAt":"2026-11-11T04:25:37.534+00:00","statement":{"source":"cve-program","id":"CVE-2026-97034","aliases":[],"title":"Arbitrary command execution via GCC spec files in cgo linker search directories in cmd/go","description":"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.","state":0,"publishedAt":"2026-11-11T03:13:17.194+00:00","modifiedAt":"2026-11-11T03:13:17.194+00:00","affected":[{"ecosystem":"https://pkg.go.dev","name":"cmd/go","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Go toolchain\",\n                    \"product\": \"cmd/go\",\n                    \"collectionURL\": \"https://pkg.go.dev\",\n                    \"packageName\": \"cmd/go\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"1.26.11\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"1.27.0-0\",\n                            \"lessThan\": \"1.27.4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[],"references":["https://go.dev/cl/862147","https://go.dev/issue/82576","https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM","https://pkg.go.dev/vuln/GO-2026-6857"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97034","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97034","identifiers":["CVE-2026-97034"]},"retained":false,"historicalAffected":[]},{"revision":"e501c4b8525b4bda8ae331e70c49da0a","observedAt":"2026-11-15T05:33:26.34+00:00","statement":{"source":"euvd","id":"EUVD-2026-123111","aliases":["CVE-2026-97034","GHSA-775q-r7gv-cr2x"],"title":"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…","description":"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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[],"references":["https://go.dev/cl/862147","https://go.dev/issue/82576","https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM","https://pkg.go.dev/vuln/GO-2026-6857"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-123111","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Nov 11, 2026, 3:13:17 AM","dateUpdated":"Nov 11, 2026, 3:13:17 AM"},"relatedAdvisories":[{"id":"openSUSE-SU-2026:12540-1","title":"go1.27-1.27.4-1.1 on GA media","vulnerabilityIds":["CVE-2026-97033","CVE-2026-97034","CVE-2026-97035","CVE-2026-97036","CVE-2026-97037","CVE-2026-97038","CVE-2026-97039","CVE-2026-97040","CVE-2026-97041","CVE-2026-97042","CVE-2026-97043","CVE-2026-97054"]},{"id":"WID-SEC-W-2026-4370","title":"Golang Go: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff","vulnerabilityIds":["CVE-2026-97033","CVE-2026-97034","CVE-2026-97035","CVE-2026-97036","CVE-2026-97037","CVE-2026-97038","CVE-2026-97039","CVE-2026-97040","CVE-2026-97041","CVE-2026-97042","CVE-2026-97043","CVE-2026-97054"]},{"id":"openSUSE-SU-2026:12529-1","title":"go1.26-1.26.11-1.1 on GA media","vulnerabilityIds":["CVE-2026-97033","CVE-2026-97034","CVE-2026-97035","CVE-2026-97036","CVE-2026-97037","CVE-2026-97038","CVE-2026-97039","CVE-2026-97040","CVE-2026-97041","CVE-2026-97042","CVE-2026-97043","CVE-2026-97054"]},{"id":"msrc_CVE-2026-97034","title":"Arbitrary command execution via GCC spec files in cgo linker search directories in cmd/go","vulnerabilityIds":["CVE-2026-97034"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-123111","identifiers":["EUVD-2026-123111","CVE-2026-97034","GHSA-775q-r7gv-cr2x"]},"retained":false,"historicalAffected":[]},{"revision":"d437bc58416f4277b9cd9f07fe156587","observedAt":"2026-11-13T06:18:20.985+00:00","statement":{"source":"nvd","id":"CVE-2026-97034","aliases":[],"title":"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…","description":"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.","state":0,"publishedAt":"2026-11-11T05:19:57.397+00:00","modifiedAt":"2026-11-12T22:09:39.233+00:00","affected":[],"metrics":[],"references":["https://go.dev/cl/862147","https://go.dev/issue/82576","https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM","https://pkg.go.dev/vuln/GO-2026-6857"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97034","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":[],"productCriteria":[],"sourceDates":{"published":"2026-11-11T05:19:57.397","lastModified":"2026-11-12T22:09:39.233"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-97034","identifiers":["CVE-2026-97034"]},"retained":false,"historicalAffected":[]},{"revision":"f02223d958664638b4c01b059692ae1e","observedAt":"2026-11-11T04:27:36.086+00:00","statement":{"source":"osv","id":"GO-2026-6857","aliases":["CVE-2026-97034"],"title":"Arbitrary command execution via GCC spec files in cgo linker search directories in cmd/go","description":"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\").\n\nWhen 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*\".\n\nThe 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.","state":0,"publishedAt":"2026-11-11T02:51:11+00:00","modifiedAt":"2026-11-11T03:15:14.7937498+00:00","affected":[{"ecosystem":"Go","name":"toolchain","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.26.11"},{"kind":"introduced","version":"1.27.0-0"},{"kind":"fixed","version":"1.27.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://go.dev/cl/862147","https://go.dev/issue/82576","https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6857","license":"OSV · upstream source license applies","key":"osv:GO-2026-6857","identifiers":["GO-2026-6857","CVE-2026-97034"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-15T19:44:19.9938399+00:00","complete":true,"records":1781,"lastAttemptAt":"2026-11-15T19:44:19.9938399+00:00","lastSuccessAt":"2026-11-15T19:44:20.2016227+00:00","error":null,"lastVerifiedAt":"2026-11-15T19:44:20.2016237+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-7de4d7559a5263003f03d9f70577ab06f92ba4178309f26fce53e22a4a959294-6fc3c2ba902d8763be7b1141e9be97dc9202b7023001a80bc4ce5ca58164e97c","complete":true,"records":425849,"lastAttemptAt":"2026-11-15T19:44:16.7564889+00:00","lastSuccessAt":"2026-11-15T19:44:16.7314012+00:00","error":null,"lastVerifiedAt":"2026-11-15T19:44:16.7564889+00:00","snapshotPublishedAt":"2026-11-15T19:27:02+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-48625c249220497b964dabb43945ba1e","complete":false,"records":13821,"lastAttemptAt":"2026-11-15T19:49:44.2886879+00:00","lastSuccessAt":"2026-11-15T19:49:44.3660363+00:00","error":null,"lastVerifiedAt":"2026-11-15T19:49:44.3660363+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-15T19:44:19.9938399+00:00","complete":true,"records":1125,"lastAttemptAt":"2026-11-15T19:44:19.9938399+00:00","lastSuccessAt":"2026-11-15T19:44:20.2027927+00:00","error":null,"lastVerifiedAt":"2026-11-15T19:44:20.2027932+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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