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vuln-cve/data/2026/27xxx/CVE-2026-27142.json
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{
"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": "2026-03-16T15:21:14.465Z"
},
"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"
}
]
},
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 6.1,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-03-16T15:21:11.058826Z",
"id": "CVE-2026-27142",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-03-16T15:21:14.465Z"
}
}
]
}
}