{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.6.13"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1a97e5b3f977130a1b84507a9e1f703c8eec12eb"
            },
            {
              "fixed": "2ae80bbbe46e7253fd080df807dceb9d20a60a77"
            }
          ],
          "repo": "https://github.com/bunkerity/bunkerweb",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-q54j-5484-pvjm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-350"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75514.json"
  },
  "details": "BunkerWeb is an open-source, next-generation Web Application Firewall. Prior to 1.6.13, the blacklist, greylist, and antibot modules in src/common/core/blacklist/blacklist.lua, src/common/core/greylist/greylist.lua, and src/common/core/antibot/antibot.lua trust PTR suffix matches in IGNORE_RDNS, GREYLIST_RDNS, and ANTIBOT_IGNORE_RDNS without using get_ips to confirm that the hostname resolves to the client address. An unauthenticated remote attacker who controls a PTR record can spoof a trusted suffix to bypass rDNS-based blacklisting, gain greylist treatment, or skip an antibot challenge. This issue is fixed in version 1.6.13.",
  "id": "CVE-2026-75514",
  "modified": "2026-08-22T03:31:18.470534567Z",
  "published": "2026-08-20T18:31:51.527Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bunkerity/bunkerweb/releases/tag/v1.6.13"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75514.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/bunkerity/bunkerweb/security/advisories/GHSA-q54j-5484-pvjm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75514"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bunkerity/bunkerweb/commit/1a97e5b3f977130a1b84507a9e1f703c8eec12eb"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bunkerity/bunkerweb/pull/3710"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "BunkerWeb: rDNS bypass via missing forward-confirmation (FCrDNS) in blacklist, greylist, and antibot"
}