CVE-2026-97045 (GCVE-0-2026-97045)

Vulnerability from cvelistv5 – Published: 2026-10-27 21:38 – Updated: 2026-10-27 21:38
VLAI
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 <mglyph> or <malignmark> fostered under <mtext>), 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.
Severity
No CVSS data available.
CWE
Assigner
Go CNA under the Google root
CNA scorecard E 42/100 over 76 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
golang.org/x/net golang.org/x/net/html Affected: 0 , < 0.62.0 (semver)
guessed Create a notification for this product.
Credits
Ali Sherif (https://www.linkedin.com/in/ali-sherif-13812b276)
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/net/html",
          "product": "golang.org/x/net/html",
          "programRoutines": [
            {
              "name": "childTextNodesAreLiteral"
            },
            {
              "name": "Render"
            }
          ],
          "vendor": "golang.org/x/net",
          "versions": [
            {
              "lessThan": "0.62.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Ali Sherif (https://www.linkedin.com/in/ali-sherif-13812b276)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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 \u003cmglyph\u003e or \u003cmalignmark\u003e fostered under \u003cmtext\u003e), 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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-79",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T21:38:56.700Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/855121"
        },
        {
          "url": "https://go.dev/issue/82622"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/sqrs2vTx_Xs"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-6866"
        }
      ],
      "title": "Check all ancestor namespace transitions when rendering raw text in html in golang.org/x/net"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-97045",
    "datePublished": "2026-10-27T21:38:56.700Z",
    "dateReserved": "2026-09-23T23:05:04.988Z",
    "dateUpdated": "2026-10-27T21:38:56.700Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://pkg.go.dev",
                "defaultStatus": "unaffected",
                "packageName": "golang.org/x/net/html",
                "product": "golang.org/x/net/html",
                "programRoutines": [
                  {
                    "name": "childTextNodesAreLiteral"
                  },
                  {
                    "name": "Render"
                  }
                ],
                "vendor": "golang.org/x/net",
                "versions": [
                  {
                    "lessThan": "0.62.0",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@golang.org"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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 \u003cmglyph\u003e or \u003cmalignmark\u003e fostered under \u003cmtext\u003e), 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."
          }
        ],
        "id": "CVE-2026-97045",
        "lastModified": "2026-10-27T22:19:22.613",
        "metrics": {},
        "published": "2026-10-27T22:19:22.613",
        "references": [
          {
            "source": "security@golang.org",
            "url": "https://go.dev/cl/855121"
          },
          {
            "source": "security@golang.org",
            "url": "https://go.dev/issue/82622"
          },
          {
            "source": "security@golang.org",
            "url": "https://groups.google.com/g/golang-announce/c/sqrs2vTx_Xs"
          },
          {
            "source": "security@golang.org",
            "url": "https://pkg.go.dev/vuln/GO-2026-6866"
          }
        ],
        "sourceIdentifier": "security@golang.org",
        "vulnStatus": "Received"
      }
    }
  }
}



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