{"action":"Upgrade stdlib to 1.25.11 or later.","affected":[{"fixed":"1.25.11","introduced":"0"},{"fixed":"1.26.4","introduced":"1.26.0-0"}],"component":"stdlib","cve_ids":["CVE-2026-42507"],"ecosystem":"Go","epss":0.0037,"exploited":false,"fixed_versions":["1.25.11","1.26.4"],"id":"tcs_01M5KGHF0ZHSQZTT7F3CVK474N","modified_at":"2026-10-03T10:41:52.575378248Z","published_at":"2026-06-02T21:39:47Z","references":["https://osv.dev/vulnerability/GO-2026-5039","https://go.dev/issue/79346","https://go.dev/cl/777060","https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-5039","url":"https://osv.dev/vulnerability/GO-2026-5039"}],"summary":"Arbitrary inputs are included in errors without any escaping in net/textproto"}