{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-39819", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-04-07T18:13:03.526Z", "datePublished": "2026-05-07T19:41:18.849Z", "dateUpdated": "2026-05-07T19:41:18.849Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-05-07T19:41:18.849Z"}, "title": "Invoking \"go bug\" follows symlinks in predictable temporary filenames in cmd/go", "descriptions": [{"lang": "en", "value": "The \"go bug\" command writes to two files with predictable names in the system temporary directory (for example, \"/tmp\"). An attacker with access to the temporary directory can create a symlink in one of these names, causing \"go bug\" to overwrite the target of the symlink."}], "affected": [{"vendor": "Go toolchain", "product": "cmd/go", "collectionURL": "https://pkg.go.dev", "packageName": "cmd/go", "versions": [{"version": "0", "lessThan": "1.25.10", "status": "affected", "versionType": "semver"}, {"version": "1.26.0-0", "lessThan": "1.26.3", "status": "affected", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-377: Insecure Temporary File"}]}], "references": [{"url": "https://go.dev/issue/78584"}, {"url": "https://go.dev/cl/763882"}, {"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"}, {"url": "https://pkg.go.dev/vuln/GO-2026-4978"}], "credits": [{"lang": "en", "value": "Harshit Gupta (Mr HAX)"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "The \"go bug\" command writes to two files with predictable names in the system temporary directory (for example, \"/tmp\"). An attacker with access to the temporary directory can create a symlink in one of these names, causing \"go bug\" to overwrite the target of the symlink."}], "id": "CVE-2026-39819", "lastModified": "2026-05-07T20:38:04.860", "metrics": {}, "published": "2026-05-07T20:16:43.083", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/763882"}, {"source": "security@golang.org", "url": "https://go.dev/issue/78584"}, {"source": "security@golang.org", "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"}, {"source": "security@golang.org", "url": "https://pkg.go.dev/vuln/GO-2026-4978"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Awaiting Analysis"}

{}

{"created": "2026-05-07T22:00:12.805488+00:00", "updated": "2026-05-07T22:00:12.805500+00:00", "vendors": [], "weaknesses": ["CWE-22"]}