{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:aquaplatform:revive_adserver:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "6.0.0"
              },
              {
                "last_affected": "6.0.4"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "d30dee449a2da3d687c66fc4c162ed0b3e39482c"
            },
            {
              "last_affected": "37592f9d564b248f86b8230f5bdd53bbaa852f9e"
            }
          ],
          "repo": "https://github.com/revive-adserver/revive-adserver",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "hackerone",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21640.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "6"
          },
          {
            "last_affected": "6.0.4"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.",
  "id": "CVE-2026-21640",
  "modified": "2026-07-17T03:41:47.741421203Z",
  "published": "2026-01-20T20:48:47.940Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/3445332"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21640.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21640"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}