Wings: Maliciously crafted packet during SFTP connection handshake causes denial of service

{
  "id": "7ed60e7f79e8e25435b22f476ce40f2f1b3410055ff02174994efaa35372e6c9",
  "url": "https://osv.dev/vulnerability/CVE-2026-52856",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Wings: Maliciously crafted packet during SFTP connection handshake causes denial of service",
    "summary": "Wings is the server control plane for Pterodactyl, a free, open-source game server management panel. Prior to 1.13.0, a malformed packet received during the SFTP connection handshake causes a Go panic. This issue is fixed in version 1.13.0.",
    "evidence": "osv:CVE-2026-52856",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-52856",
      "aliases": [
        "CVE-2026-52856",
        "GHSA-ghrq-5wpp-hxx5",
        "GO-2026-6156"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pterodactyl/wings",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6a7fc51a2361d83cad994f659a0fa6c458a33bd5"
                },
                {
                  "fixed": "8e49c7c0eda815d3ada171831876a1c14c493026"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.13.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8e49c7c0eda815d3ada171831876a1c14c493026"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "6a7fc51a2361d83cad994f659a0fa6c458a33bd5"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.13.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.12.3",
            "v1.12.2",
            "v1.12.1",
            "v1.12.0",
            "v1.11.13",
            "v1.11.12",
            "v1.11.11",
            "v1.11.10",
            "v1.11.9",
            "v1.11.8",
            "v1.11.7",
            "v1.11.6",
            "v1.11.5",
            "v1.11.4",
            "v1.11.3",
            "v1.7.2",
            "v1.11.2",
            "v1.11.1",
            "v1.11.0",
            "v1.11.0-rc.2",
            "v1.11.0-rc.1",
            "v1.7.1",
            "v1.7.0",
            "v1.6.4",
            "v1.6.3",
            "v1.6.2",
            "v1.6.1",
            "v1.6.0",
            "v1.5.6",
            "v1.5.5",
            "v1.5.4",
            "v1.5.3",
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.4.7",
            "v1.4.6",
            "v1.4.5",
            "v1.4.4",
            "v1.4.3",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.3",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.3",
            "v1.1.2",
            "v1.1.1",
            "v1.1.0",
            "v1.0.1",
            "v1.0.0",
            "v1.0.0-rc.7",
            "v1.0.0-rc.6",
            "v1.0.0-rc.5",
            "v1.0.0-rc.4",
            "v1.0.0-rc.3",
            "v1.0.0-rc.2",
            "v1.0.0-rc.1",
            "v1.0.0-beta.9"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52856.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.286807254Z",
      "provider": "osv",
      "references": [
        "https://github.com/pterodactyl/wings/releases/tag/v1.13.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52856.json",
        "https://github.com/pterodactyl/wings/security/advisories/GHSA-ghrq-5wpp-hxx5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-52856",
        "https://github.com/pterodactyl/wings/commit/8e49c7c0eda815d3ada171831876a1c14c493026"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-129",
          "CWE-248",
          "CWE-617",
          "CWE-755"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52856.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-52856",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498319,
  "published_at": "2026-07-31T16:20:31.222+00:00"
}