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GHSA-VWCJ-R8V9-P53F

Vulnerability from github – Published: 2026-10-28 00:30 – Updated: 2026-10-28 00:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97045"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-27T22:19:22Z",
    "severity": null
  },
  "details": "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": "GHSA-vwcj-r8v9-p53f",
  "modified": "2026-10-28T00:30:30Z",
  "published": "2026-10-28T00:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97045"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/855121"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/issue/82622"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/sqrs2vTx_Xs"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2026-6866"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-10-27 21:38 – Updated: 2026-10-27 21:38

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

CWE-79

Assigner

Go CNA under the Google root

CNA scorecard E 42/100 over 76 records in the last 180 days details

References

4 references

URL	Tags
https://go.dev/cl/855121
https://go.dev/issue/82622
https://groups.google.com/g/golang-announce/c/sqr…
https://pkg.go.dev/vuln/GO-2026-6866

Impacted products

1 product

Vendor	Product	Version
golang.org/x/net	golang.org/x/net/html	Affected: 0 , < 0.62.0 (semver)

Credits

Ali Sherif (https://www.linkedin.com/in/ali-sherif-13812b276)

Show details on NVD website

JSON

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{
  "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"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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