Security advisory

{
  "id": "59e2e76f10363bd0e2816164bb5d7a57cb3d1b23c63b85cc6474e215682937f8",
  "url": "https://osv.dev/vulnerability/CVE-2021-38561",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-38561",
    "summary": "golang.org/x/text/language in golang.org/x/text before 0.3.7 can panic with an out-of-bounds read during BCP 47 language tag parsing. Index calculation is mishandled. If parsing untrusted user input, this can be used as a vector for a denial-of-service attack.",
    "evidence": "osv:CVE-2021-38561",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-38561",
      "aliases": [
        "CVE-2021-38561",
        "GHSA-ppp9-7jff-5vj2",
        "GO-2021-0113"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/golang/text",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "383b2e75a7a4198c42f8f87833eefb772868a56f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:golang:text:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.3.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.6",
            "v0.3.5",
            "v0.3.4",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-38561.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:47.295390749Z",
      "provider": "osv",
      "references": [
        "https://groups.google.com/g/golang-announce",
        "https://pkg.go.dev/golang.org/x/text/language",
        "https://deps.dev/advisory/OSV/GO-2021-0113",
        "https://go.googlesource.com/text/+/383b2e75a7a4198c42f8f87833eefb772868a56f"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-38561",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436517,
  "published_at": "2022-12-26T06:15:10.56+00:00"
}