{"action":"Upgrade stdlib to 1.25.13 or later.","affected":[{"fixed":"1.25.13","introduced":"0"},{"fixed":"1.26.6","introduced":"1.26.0-0"},{"introduced":"1.27.0-0"}],"component":"stdlib","cve_ids":["CVE-2026-56858"],"ecosystem":"Go","exploited":false,"fixed_versions":["1.25.13","1.26.6","1.27.0-rc.3"],"id":"tcs_01M5JK7GT8S6NPCNZ8TBTVWXNP","modified_at":"2026-10-20T10:42:25.286379908Z","published_at":"2026-08-13T21:43:54Z","references":["https://osv.dev/vulnerability/GO-2026-6091","https://go.dev/issue/80435","https://go.dev/cl/807100","https://groups.google.com/g/golang-announce/c/94pEornpRlI"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GO-2026-6091","url":"https://osv.dev/vulnerability/GO-2026-6091"},{"source":"nvd","source_id":"CVE-2026-56858","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56858"}],"summary":"Fix Javascript regexp context tracking in html/template"}