Security advisory

{
  "id": "850da9cb31aebd9e08b86b329d53d887e547caa448f194dffbfd181b18e048dc",
  "url": "https://osv.dev/vulnerability/CVE-2023-50453",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-50453",
    "summary": "An issue was discovered in Zammad before 6.2.0. It uses the public endpoint /api/v1/signshow for its login screen. This endpoint returns internal configuration data of user object attributes, such as selectable values, which should not be visible to the public.",
    "evidence": "osv:CVE-2023-50453",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-50453",
      "aliases": [
        "CVE-2023-50453"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zammad/zammad",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ec4ddb8ae6a55d1c8e64ab5ddda9ff3e9d4f45c8"
                },
                {
                  "last_affected": "9c250aa912971ae5832f3b8d5693774bf1e78a6f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:zammad:zammad:6.1.0:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.1.0-NA"
                      },
                      {
                        "last_affected": "6.1.0-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:zammad:zammad:6.1.0:alpha:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.1.0-alpha"
                      },
                      {
                        "last_affected": "6.1.0-alpha"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:zammad:zammad:6.2.0:alpha:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.2.0-alpha"
                      },
                      {
                        "last_affected": "6.2.0-alpha"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "6.1.0-NA",
            "6.1.0-alpha",
            "6.2.0-alpha"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-50453.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.348255011Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50453.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-50453",
        "https://zammad.com/en/advisories/zaa-2023-08"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50453.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-50453",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 496337,
  "published_at": "2023-12-10T00:00:00+00:00"
}