{"action":"Upgrade toolchain to 1.25.10 or later.","affected":[{"fixed":"1.25.10","introduced":"0"},{"fixed":"1.26.3","introduced":"1.26.0-0"}],"component":"toolchain","cve_ids":["CVE-2026-39819"],"ecosystem":"Go","epss":0.00179,"exploited":false,"fixed_versions":["1.25.10","1.26.3"],"id":"tcs_01M5KGH4XRANBMGW3EAGVW9ZZ7","modified_at":"2026-09-22T10:41:48.065334746Z","published_at":"2026-05-07T19:21:40Z","references":["https://osv.dev/vulnerability/GO-2026-4978","https://go.dev/issue/78584","https://go.dev/cl/763882","https://groups.google.com/g/golang-announce/c/qcCIEXso47M"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GO-2026-4978","url":"https://osv.dev/vulnerability/GO-2026-4978"},{"source":"nvd","source_id":"CVE-2026-39819","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39819"}],"summary":"Invoking \"go bug\" follows symlinks in predictable temporary filenames in cmd/go"}