Security advisory

{
  "id": "9f26feb19f5c3eae44c5989a3998e255edd680ce6ef3dd34221900dd274a753a",
  "url": "https://osv.dev/vulnerability/CVE-2021-4274",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-4274",
    "summary": "A vulnerability, which was classified as problematic, has been found in sileht bird-lg. This issue affects some unknown processing of the file templates/layout.html. The manipulation of the argument request_args leads to cross site scripting. The attack may be initiated remotely. The name of the patch is ef6b32c527478fefe7a4436e10b96ee28ed5b308. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-216479.",
    "evidence": "osv:CVE-2021-4274",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-4274",
      "aliases": [
        "CVE-2021-4274"
      ],
      "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/sileht/bird-lg",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ef6b32c527478fefe7a4436e10b96ee28ed5b308"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "ef6b32c527478fefe7a4436e10b96ee28ed5b308"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2012.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4274.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:06.430904693Z",
      "provider": "osv",
      "references": [
        "https://vuldb.com/?id.216479",
        "https://github.com/sileht/bird-lg/commit/ef6b32c527478fefe7a4436e10b96ee28ed5b308",
        "https://github.com/sileht/bird-lg/pull/82"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-4274",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384865,
  "published_at": "2022-12-21T19:15:14.257+00:00"
}