{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-95859",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-22T16:39:45.794Z",
        "datePublished": "2026-10-16T15:19:04.504Z",
        "dateUpdated": "2026-10-16T15:19:04.504Z"
    },
    "containers": {
        "cna": {
            "title": "libp2p-rust: Gossipsub GRAFT topics unbounded growth",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-770",
                            "lang": "en",
                            "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "vectorString": "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",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-g3g5-x568-qvqx",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/libp2p/rust-libp2p/security/advisories/GHSA-g3g5-x568-qvqx"
                },
                {
                    "name": "https://github.com/libp2p/rust-libp2p/pull/6608",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/libp2p/rust-libp2p/pull/6608"
                },
                {
                    "name": "https://github.com/libp2p/rust-libp2p/commit/51ed5f00e1b0620ded3444ecadf18477052148ea",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/libp2p/rust-libp2p/commit/51ed5f00e1b0620ded3444ecadf18477052148ea"
                }
            ],
            "affected": [
                {
                    "vendor": "libp2p",
                    "product": "rust-libp2p",
                    "versions": [
                        {
                            "version": "< 0.49.5",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-16T15:19:04.504Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-g3g5-x568-qvqx",
                "discovery": "UNKNOWN"
            }
        }
    }
}