{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "51ed5f00e1b0620ded3444ecadf18477052148ea"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "51ed5f00e1b0620ded3444ecadf18477052148ea"
            }
          ],
          "repo": "https://github.com/libp2p/rust-libp2p",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g3g5-x568-qvqx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/95xxx/CVE-2026-95859.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "0.49.5"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "0.49.5"
              },
              {
                "fixed": "0.49.5"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "libp2p-rust is the official Rust language implementation of the libp2p networking stack. Prior to 0.49.5, Gossipsub GRAFT control-message handling unconditionally adds attacker-supplied topic hashes to connected_peer.topics without confirming that the peer previously subscribed to those topics. A remote unauthenticated peer that can reach a Gossipsub listener can repeatedly send novel GRAFT topics, causing cumulative per-peer memory growth that is not bounded by subscription filters, peer scoring, or per-message size limits. This can exhaust process memory and cause a denial of service. This issue is fixed in version 0.49.5.",
  "id": "CVE-2026-95859",
  "modified": "2026-10-24T02:30:39.417984610Z",
  "published": "2026-10-16T15:19:04.504Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/95xxx/CVE-2026-95859.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-g3g5-x568-qvqx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-95859"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libp2p/rust-libp2p/commit/51ed5f00e1b0620ded3444ecadf18477052148ea"
    },
    {
      "type": "FIX",
      "url": "https://github.com/libp2p/rust-libp2p/pull/6608"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "libp2p-rust: Gossipsub GRAFT topics unbounded growth"
}