Security advisory

{
  "id": "4cd6bdf1fb61c9a0cd1faacc14b9b91cc821704309b9a37e46836d8d7cc41dfe",
  "url": "https://osv.dev/vulnerability/CVE-2021-28162",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-28162",
    "summary": "In Eclipse Theia versions up to and including 0.16.0, in the notification messages there is no HTML escaping, so Javascript code can run.",
    "evidence": "osv:CVE-2021-28162",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-28162",
      "aliases": [
        "CVE-2021-28162",
        "GHSA-c94v-8fff-73ph"
      ],
      "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/eclipse-theia/theia",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "c965552a41d7963a0f6f960b831f894a75de2713"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.16.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.16.0",
            "v0.15.0",
            "v0.14.0",
            "v0.13.0",
            "v0.12.0",
            "v0.11.0",
            "v0.10.0",
            "v0.9.0",
            "v0.8.0",
            "v0.7.0",
            "v0.6.0",
            "v0.5.0",
            "v0.4.0",
            "v0.3.19",
            "v0.3.18",
            "v0.3.17",
            "v0.3.16",
            "v0.3.15",
            "v0.3.14",
            "v0.3.13",
            "v0.3.12",
            "v0.3.11",
            "v0.3.10",
            "v0.3.9",
            "v0.3.8",
            "v0.3.4",
            "v0.3.3",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.2.4",
            "v0.2.3",
            "v0.2.2",
            "v0.2.1",
            "v0.2.0",
            "v0.1.1",
            "v0.1.0",
            "0.0.1-alpha.2",
            "0.0.1-alpha.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-28162.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:35.846499987Z",
      "provider": "osv",
      "references": [
        "https://github.com/eclipse-theia/theia/issues/7283"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-28162",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385696,
  "published_at": "2021-03-12T22:15:15.157+00:00"
}