Security advisory

{
  "id": "e54fbe70dfb766e04efb4825d495466902bee8c9cede1a2d16cdc8f395f94074",
  "url": "https://osv.dev/vulnerability/CVE-2025-24946",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-24946",
    "summary": "The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).",
    "evidence": "osv:CVE-2025-24946",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-24946",
      "aliases": [
        "CVE-2025-24946"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ncc-pbottine/quic-hash-dos-advisory",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b80fd3f5903279ae3e7714ee4109363d9ab4491a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "b80fd3f5903279ae3e7714ee4109363d9ab4491a"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            },
            {
              "repo": "https://github.com/private-octopus/picoquic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b80fd3f5903279ae3e7714ee4109363d9ab4491a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "b80fd3f5903279ae3e7714ee4109363d9ab4491a"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "draft-16-final"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-24946.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.092942995Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24946.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-24946",
        "https://github.com/private-octopus/picoquic/commit/b80fd3f5903279ae3e7714ee4109363d9ab4491a",
        "https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-407"
        ],
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24946.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-24946",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509918,
  "published_at": "2025-02-20T00:00:00+00:00"
}