{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-27142", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-02-17T19:57:28.435Z", "datePublished": "2026-03-06T21:28:14.674Z", "dateUpdated": "2026-03-06T21:28:14.674Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-03-06T21:28:14.674Z"}, "title": "URLs in meta content attribute actions are not escaped in html/template", "descriptions": [{"lang": "en", "value": "Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value \"refresh\". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escaping URLs in actions in the meta content attribute which follow \"url=\" by setting htmlmetacontenturlescape=0."}], "affected": [{"vendor": "Go standard library", "product": "html/template", "collectionURL": "https://pkg.go.dev", "packageName": "html/template", "versions": [{"version": "0", "lessThan": "1.25.8", "status": "affected", "versionType": "semver"}, {"version": "1.26.0-0", "lessThan": "1.26.1", "status": "affected", "versionType": "semver"}], "programRoutines": [{"name": "tTag"}, {"name": "escaper.escapeAction"}, {"name": "Template.Execute"}, {"name": "Template.ExecuteTemplate"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "references": [{"url": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk"}, {"url": "https://go.dev/issue/77954"}, {"url": "https://go.dev/cl/752081"}, {"url": "https://pkg.go.dev/vuln/GO-2026-4603"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value \"refresh\". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escaping URLs in actions in the meta content attribute which follow \"url=\" by setting htmlmetacontenturlescape=0."}], "id": "CVE-2026-27142", "lastModified": "2026-03-06T22:16:01.177", "metrics": {}, "published": "2026-03-06T22:16:01.177", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/752081"}, {"source": "security@golang.org", "url": "https://go.dev/issue/77954"}, {"source": "security@golang.org", "url": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk"}, {"source": "security@golang.org", "url": "https://pkg.go.dev/vuln/GO-2026-4603"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Received"}

{}