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Check all ancestor namespace transitions when rendering raw text in html in golang.org/x/net

Type: advisorySources: Official CVE List

In childTextNodesAreLiteral, walking up the tree previously stopped at the nearest foreign ancestor once an HTML integration point was found. However, that integration point may itself be a descendant of an element that was foster-parented into a foreign namespace (such as or fostered under ), causing a parser to resolve the subtree in a different foreign namespace upon re-parsing the rendered output. Continue walking the full ancestor chain and verify that every transition from a non-empty namespace occurs at an HTML integration point before emitting literal text.

Products
golang.org/x/net/html
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-97045
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 16:31 UTC · Revision 1

Source evidence

Check all ancestor namespace transitions when rendering raw text in html in golang.org/x/net

core-cve · Original source

Published 27 Oct 2026, 21:38 UTC

In childTextNodesAreLiteral, walking up the tree previously stopped at the nearest foreign ancestor once an HTML integration point was found. However, that integration point may itself be a descendant of an element that was foster-parented into a foreign namespace (such as or fostered under ), causing a parser to resolve the subtree in a different foreign namespace upon re-parsing the rendered output. Continue walking the full ancestor chain and verify that every transition from a non-empty namespace occurs at an HTML integration point before emitting literal text.

cve:CVE-2026-97045

golang.org/x/net/html

Fixed versions: Not specified

Complete source record
{
  "id": "f2efee08097ed931dca8d04fa824033123dcd3949969e9a1eda40d7e07e39ffa",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-97045",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Check all ancestor namespace transitions when rendering raw text in html in golang.org/x/net",
    "summary": "In childTextNodesAreLiteral, walking up the tree previously stopped at the nearest foreign ancestor once an HTML integration point was found. However, that integration point may itself be a descendant of an element that was foster-parented into a foreign namespace (such as or fostered under ), causing a parser to resolve the subtree in a different foreign namespace upon re-parsing the rendered output. Continue walking the full ancestor chain and verify that every transition from a non-empty namespace occurs at an HTML integration point before emitting literal text.",
    "evidence": "cve:CVE-2026-97045",
    "products": [
      {
        "name": {
          "value": "golang.org/x/net/html",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-97045",
      "aliases": [
        "CVE-2026-97045"
      ],
      "metrics": [],
      "affected": [
        {
          "vendor": "golang.org/x/net",
          "product": "golang.org/x/net/html",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "0.62.0",
              "versionType": "semver"
            }
          ],
          "packageName": "golang.org/x/net/html",
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "childTextNodesAreLiteral"
            },
            {
              "name": "Render"
            }
          ]
        }
      ],
      "modified": "2026-10-27T21:38:56.700Z",
      "provider": "cve",
      "references": [
        "https://go.dev/cl/855121",
        "https://go.dev/issue/82622",
        "https://groups.google.com/g/golang-announce/c/sqrs2vTx_Xs",
        "https://pkg.go.dev/vuln/GO-2026-6866"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
          "shortName": "Go",
          "dateUpdated": "2026-10-27T21:38:56.700Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-97045",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-cve",
  "document_id": 400614,
  "published_at": "2026-10-27T21:38:56.7+00:00"
}