{"id":"GO-2026-6091","aliases":["BIT-golang-2026-56858","CVE-2026-56858"],"title":"Fix Javascript regexp context tracking in html/template","titleSource":"OSV","descriptionSource":"OSV","description":"Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to inject arbitrary content, potentially leading to XSS.","severity":"unknown","score":null,"published":"2026-08-13T21:43:54.000Z","modified":"2026-11-14T13:12:14.881Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Go","name":"stdlib","sources":[{"name":"OSV · GO-2026-6091","url":"https://osv.dev/vulnerability/GO-2026-6091"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"1.25.13"},{"introduced":"1.26.0-0"},{"fixed":"1.26.6"},{"introduced":"1.27.0-0"},{"fixed":"1.27.0-rc.3"}],"type":"SEMVER"}],"versions":[],"fixed":["1.25.13","1.26.6","1.27.0-rc.3"]}],"sourceAffected":[],"references":["https://go.dev/issue/80435","https://go.dev/cl/807100","https://groups.google.com/g/golang-announce/c/94pEornpRlI"],"sources":[{"name":"OSV","id":"GO-2026-6091","modified":"2026-11-14T13:12:14.881183967Z","url":"https://osv.dev/vulnerability/GO-2026-6091"}],"assessments":[],"products":[],"remediation":[],"observedAt":"2026-11-14T15:04:17.408Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:10:31.937Z"},"coverage":[{"source":"NVD","status":"refresh-failed","attemptedAt":"2026-11-14T00:15:32.269Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-14T00:05:32.694Z","attemptedAt":"2026-11-14T00:05:32.694Z"},{"source":"EUVD","status":"refresh-failed","attemptedAt":"2026-11-14T00:05:33.298Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-14T00:05:32.695Z","attemptedAt":"2026-11-14T00:05:32.695Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-c974-w86c-vpfw","url":"https://github.com/advisories/GHSA-c974-w86c-vpfw","modified":"2026-08-14T18:31:34Z","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","checkedAt":"2026-11-14T00:05:32.694Z"},{"source":"FIRST EPSS","id":"CVE-2026-56858","url":"https://www.first.org/epss/","probability":0.0031,"percentile":0.24122,"date":"2026-11-13","checkedAt":"2026-11-14T00:05:32.695Z"}],"aiSummary":null}