Security advisory

{
  "id": "d15cb0dba18dc37a5fcffae0963a6878b07725de4dd098090f4120e97842ae96",
  "url": "https://osv.dev/vulnerability/CVE-2021-30185",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-30185",
    "summary": "CERN Indico before 2.3.4 can use an attacker-supplied Host header in a password reset link.",
    "evidence": "osv:CVE-2021-30185",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-30185",
      "aliases": [
        "CVE-2021-30185",
        "GHSA-wgpj-7c2j-vfjm",
        "PYSEC-2021-18"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/indico/indico",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "dbf09025d3fd96b7a238ed0f5f1057f494d1feff"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.3.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "dbf09025d3fd96b7a238ed0f5f1057f494d1feff"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.3.4"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.3.3",
            "v2.3.2",
            "v2.3.1",
            "v2.3",
            "v2.2",
            "v2.1",
            "v2.1rc6",
            "v2.1rc5",
            "v2.1rc4",
            "v2.1rc3",
            "v2.1rc2",
            "v2.1rc1",
            "v2.1b1",
            "v2.1a3",
            "v2.1a2",
            "v2.1a1",
            "v2.0rc1",
            "v2.0a1",
            "v1.9.11.dev9",
            "v1.9.11.dev8",
            "v1.9.11.dev7",
            "v1.9.11.dev6",
            "v1.9.11.dev3",
            "v1.9.9",
            "v0.97b2",
            "v0.97b"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-30185.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:39.455307820Z",
      "provider": "osv",
      "references": [
        "https://github.com/indico/indico/releases/tag/v2.3.4",
        "https://www.shorebreaksecurity.com/blog/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-30185",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385816,
  "published_at": "2021-04-07T14:15:17.267+00:00"
}