Security advisory

{
  "id": "5433ec8a666bb09f86f2972355991a2a5f65f87e98b1c6fc5daac9e237db48d8",
  "url": "https://osv.dev/vulnerability/CVE-2026-50739",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-50739",
    "summary": "A bypass for CVE‑2026‑34913 exists with proper ownership validation that had not been applied to the reverse operation of linking campaigns and trackers through the `tracker-campaigns.php` script in Revive Adserver 6.0.7 and earlier. As a result, a low‑privileged user could link their trackers to campaigns owned by other managers on the same instance, leading to inconsistent ownership relationships.",
    "evidence": "osv:CVE-2026-50739",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-50739",
      "aliases": [
        "CVE-2026-50739"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/revive-adserver/revive-adserver",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "cc962cd9f6cccc0bc4f5c74510cd6fdd08c18654"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:revive-adserver:revive_adserver:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "6.0.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v6.0.7",
            "v6.0.6",
            "v6.0.5",
            "v6.0.4",
            "v6.0.3",
            "v6.0.2",
            "v6.0.1",
            "v6.0.0",
            "v5.4.1",
            "v5.4.0",
            "v5.4.0-rc1",
            "v5.3.0",
            "v5.3.0-rc1",
            "v5.2.1",
            "v5.2.0",
            "v5.1.1",
            "v5.1.0",
            "v5.1.0-rc1",
            "v5.0.5",
            "v5.0.4",
            "v5.0.3",
            "v5.0.1",
            "v5.0.0",
            "v5.0.0-rc1",
            "v4.2.1",
            "v4.2.0",
            "v4.2.0-rc1",
            "v4.1.4",
            "v4.1.3",
            "v4.1.2",
            "v4.1.0",
            "v4.1.0-rc1",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0",
            "v4.0.0-rc1",
            "v3.2.1",
            "v3.2.1-rc1",
            "v3.2.0",
            "v3.2.0-beta",
            "v3.1.0",
            "v3.1.0-beta",
            "v3.0.3",
            "v3.0.2",
            "v3.0.1",
            "v3.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50739.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.457547960Z",
      "provider": "osv",
      "references": [
        "https://hackerone.com/reports/3780709",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50739.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-50739"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-284"
        ],
        "cna_assigner": "hackerone",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "6.0.7"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50739.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-50739",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492135,
  "published_at": "2026-06-26T01:11:14.071+00:00"
}