Podgrab Unauthenticated DoS via Concurrent Map Access in WebSocket Handler

{
  "id": "ab3e4998f21a718c8d2c1e0a5f2d7f95674e6d1b670889ec4fcf63931f443d26",
  "url": "https://osv.dev/vulnerability/CVE-2026-104057",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Podgrab Unauthenticated DoS via Concurrent Map Access in WebSocket Handler",
    "summary": "Podgrab contains an unauthenticated denial-of-service vulnerability caused by unsynchronized concurrent access to shared maps (activePlayers and allConnections) in its WebSocket handler, where Wshandler and HandleWebsocketMessages goroutines read and write these maps without a mutex. A remote attacker can open multiple WebSocket connections to the /ws endpoint and send messages in a loop to trigger a Go runtime data race that crashes the process, causing a denial of service that requires operator intervention to restore service.",
    "evidence": "osv:CVE-2026-104057",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-104057",
      "aliases": [
        "CVE-2026-104057"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/akhilrex/podgrab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "032248091294dbf5b6a439a5afd93788a7cc647f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "032248091294dbf5b6a439a5afd93788a7cc647f"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104057.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.178807704Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104057.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-104057",
        "https://www.vulncheck.com/advisories/podgrab-unauthenticated-dos-via-concurrent-map-access-in-websocket-handler",
        "https://github.com/akhilrex/podgrab",
        "https://gist.github.com/mansurmavlankulov/022bc672583687ccb34dcf4cb31b6188"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-362"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104057.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-104057",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518391,
  "published_at": "2026-10-01T18:04:01.135+00:00"
}