Security advisory

{
  "id": "0dde4094f157d9c5ed3870393fba9b99ba0a31a8c977b1cd189d2785abb0be4d",
  "url": "https://osv.dev/vulnerability/CVE-2025-29606",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-29606",
    "summary": "py-libp2p before 0.2.3 allows a peer to cause a denial of service (resource consumption) via a large RSA key.",
    "evidence": "osv:CVE-2025-29606",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-29606",
      "aliases": [
        "CVE-2025-29606",
        "GHSA-x8c6-gj59-6rx8",
        "PYSEC-2026-1536"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libp2p/py-libp2p",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "479b12f64d8e91fae772cd3b89977bd3f8d0aa1e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.2.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2p"
                      },
                      {
                        "fixed": "0.2.3"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.2.2",
            "v0.2.1",
            "v0.2.0",
            "v0.1.5",
            "v0.1.4",
            "v0.1.3",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-29606.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.340153143Z",
      "provider": "osv",
      "references": [
        "https://github.com/libp2p/py-libp2p/compare/v0.2.2...v0.2.3",
        "https://github.com/libp2p/py-libp2p/pull/531/files",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/29xxx/CVE-2025-29606.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-29606",
        "https://github.com/libp2p/py-libp2p/issues/526"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-770"
        ],
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/29xxx/CVE-2025-29606.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-29606",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499477,
  "published_at": "2025-07-14T00:00:00+00:00"
}