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.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"fixed": "1.25.8"
},
{
"introduced": "1.26.0-0"
},
{
"fixed": "1.26.1"
}
],
"source": "AFFECTED_FIELD"
}
],
"cna_assigner": "Go",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27142.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.25.8"
},
{
"last_affected": "1.26.0"
}
],
"cpe": [
"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
"cpe:2.3:a:golang:go:1.26.0:*:*:*:*:*:*:*"
],
"source": [
"CPE_RANGE",
"CPE_STRING"
]
}