Security advisory

{
  "id": "db297f535efa5631e01f108472713e3d5891a18de8cddc7a7d517698db5d98da",
  "url": "https://osv.dev/vulnerability/CVE-2021-42648",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-42648",
    "summary": "Cross-site scripting (XSS) vulnerability exists in Coder Code-Server before 3.12.0, allows attackers to execute arbitrary code via crafted URL.",
    "evidence": "osv:CVE-2021-42648",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-42648",
      "aliases": [
        "CVE-2021-42648",
        "GHSA-2gp3-6c9p-jp7w"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/coder/code-server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "798dc0baf284416dbbf951e4ef596beeab6cb6c4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:coder:code-server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.12.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.9.1",
            "3.4.1",
            "3.4.0",
            "v3.3.0",
            "3.2.0",
            "3.1.1",
            "3.1.0",
            "3.0.2",
            "3.0.1",
            "3.0.0",
            "2.1698",
            "2.1692-vsc1.39.2",
            "2.1688-vsc1.39.2",
            "2.1665-vsc1.39.2",
            "2.1662-vsc1.39.2",
            "2.1655-vsc1.39.2",
            "2.1650-vsc1.39.2",
            "2.1638-vsc1.39.2",
            "2.1637-vsc1.39.2",
            "2.1523-vsc1.38.1",
            "2.1485-vsc1.38.1",
            "2.1478-vsc1.38.1",
            "2.1472-vsc1.38.1",
            "1.1119-vsc1.33.1",
            "1.1156-vsc1.33.1",
            "1.1140-vsc1.33.1",
            "1.1106-vsc1.33.1",
            "1.1099-vsc1.33.1",
            "1.939-vsc1.33.1",
            "1.903-vsc1.33.1",
            "1.868-vsc1.33.1",
            "1.854-vsc1.33.1",
            "1.792-vsc1.33.1",
            "1.790-vsc1.33.1",
            "1.696-vsc1.33.0",
            "1.691-vsc1.33.0",
            "1.604-vsc1.32.0",
            "1.408-vsc1.32.0",
            "1.32.0-310",
            "1.32.0-282",
            "1.32.0-275",
            "1.32.0-245",
            "1.31.1-100",
            "1.31.0-20",
            "1.31.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-42648.json"
          }
        }
      ],
      "modified": "2026-10-20T10:55:00.864181289Z",
      "provider": "osv",
      "references": [
        "https://github.com/cdr/code-server/issues/4355"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-42648",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386683,
  "published_at": "2022-05-11T18:15:23.097+00:00"
}