{"cve":{"cve_id":"CVE-2026-27142","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00328,"epss_percentile":0.25175,"epss_as_of":"2026-08-26","description":"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.","published_at":"2026-03-06T21:28:14.674000Z","last_modified_at":null,"cvss_v3_score":6.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":false,"ssvc_technical_impact":"partial","cwes":null,"nvd_references":["https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk","https://go.dev/issue/77954","https://go.dev/cl/752081","https://pkg.go.dev/vuln/GO-2026-4603"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-29T23:46:59.033383Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"go-standard-library","vendor_name":"Go standard library","product_slug":"html-template","product_name":"html/template","version_start":"0","version_start_inclusive":true,"version_end":"1.25.8","version_end_inclusive":false,"cpe23_uri":"cve5:go-standard-library:html-template:0:1.25.8"},{"vendor_slug":"go-standard-library","vendor_name":"Go standard library","product_slug":"html-template","product_name":"html/template","version_start":"1.26.0-0","version_start_inclusive":true,"version_end":"1.26.1","version_end_inclusive":false,"cpe23_uri":"cve5:go-standard-library:html-template:1.26.0-0:1.26.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk","source_type":"MISC","tags":[]},{"url":"https://go.dev/issue/77954","source_type":"MISC","tags":[]},{"url":"https://go.dev/cl/752081","source_type":"MISC","tags":[]},{"url":"https://pkg.go.dev/vuln/GO-2026-4603","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-03-06T21:28:14.674000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:52:17.441167Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:52:17.441167Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:52:17.441167Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T23:46:59.033383Z","label":"SSVC decision revised","source":"vulnrichment"}]}