{"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-2026-42504"],"ecosystem":"Go","exploited":false,"fixed_versions":["1.25.11","1.26.4"],"id":"tcs_01M5JK7HJFG4QPQG00GKW78VV9","modified_at":"2026-10-20T10:42:25.450670128Z","published_at":"2026-06-02T21:39:47Z","references":["https://osv.dev/vulnerability/GO-2026-5038","https://go.dev/issue/79217","https://go.dev/cl/774481","https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GO-2026-5038","url":"https://osv.dev/vulnerability/GO-2026-5038"},{"source":"nvd","source_id":"CVE-2026-42504","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42504"}],"summary":"Quadratic complexity in WordDecoder.DecodeHeader in mime"}