Security advisory

{
  "id": "9c5afd29bc58775e83bf968da17586fbc325b3997bf11369f0d586e122687660",
  "url": "https://osv.dev/vulnerability/CVE-2020-29158",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-29158",
    "summary": "An issue was discovered in Zammad before 3.5.1. An Agent with Customer permissions in a Group can bypass intended access control on internal Articles via the Ticket detail view.",
    "evidence": "osv:CVE-2020-29158",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-29158",
      "aliases": [
        "CVE-2020-29158"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zammad/zammad",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "99fd30d93c13cc52e2a5d3e27102e394650e2c16"
                },
                {
                  "fixed": "cf5a5e396058d4b134dd33d0a62b11c1733c98ab"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.5.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "cf5a5e396058d4b134dd33d0a62b11c1733c98ab"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.7.0",
            "3.5.0",
            "1.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-29158.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:12.818208497Z",
      "provider": "osv",
      "references": [
        "https://zammad.com/en/advisories/zaa-2020-23",
        "https://github.com/zammad/zammad/commit/cf5a5e396058d4b134dd33d0a62b11c1733c98ab"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-29158",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384228,
  "published_at": "2020-12-28T08:15:11.523+00:00"
}