{"schema_version":"1.9.0","id":"BIT-golang-2026-39819","published":"2026-05-11T05:44:30.210Z","modified":"2026-09-08T08:47:49.762990015Z","aliases":["CVE-2026-39819","GO-2026-4978"],"summary":"Invoking \"go bug\" follows symlinks in predictable temporary filenames in cmd/go","details":"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":[{"package":{"name":"golang","ecosystem":"Bitnami","purl":"pkg:bitnami/golang"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.25.10"},{"introduced":"1.26.0-0"},{"fixed":"1.26.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/golang/BIT-golang-2026-39819.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N"}]}],"references":[{"type":"FIX","url":"https://go.dev/cl/763882"},{"type":"REPORT","url":"https://go.dev/issue/78584"},{"type":"REPORT","url":"https://groups.google.com/g/golang-announce/c/qcCIEXso47M"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39819"},{"type":"ADVISORY","url":"https://pkg.go.dev/vuln/GO-2026-4978"}],"database_specific":{"cpes":["cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"],"severity":"Medium"}}