{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-103936",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-01T14:20:19.156Z",
        "datePublished": "2026-10-15T17:28:32.567Z",
        "dateUpdated": "2026-10-16T17:12:49.532Z"
    },
    "containers": {
        "cna": {
            "title": "libp2p: Single pre-auth STUN packet terminates `@libp2p/webrtc` WebRTC-direct Node.js listeners",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-248",
                            "lang": "en",
                            "description": "CWE-248: Uncaught Exception",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-755",
                            "lang": "en",
                            "description": "CWE-755: Improper Handling of Exceptional Conditions",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x3m2-6mg8-vj7f",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/libp2p/js-libp2p/security/advisories/GHSA-x3m2-6mg8-vj7f"
                },
                {
                    "name": "https://github.com/libp2p/js-libp2p/pull/3584",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/libp2p/js-libp2p/pull/3584"
                },
                {
                    "name": "https://github.com/libp2p/js-libp2p/commit/68794c8e2e67d5f38da59e379dc051b2789e46f6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/libp2p/js-libp2p/commit/68794c8e2e67d5f38da59e379dc051b2789e46f6"
                },
                {
                    "name": "https://github.com/libp2p/js-libp2p/releases/tag/webrtc-v6.0.28",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/libp2p/js-libp2p/releases/tag/webrtc-v6.0.28"
                }
            ],
            "affected": [
                {
                    "vendor": "libp2p",
                    "product": "js-libp2p",
                    "versions": [
                        {
                            "version": "< 3.3.7",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@libp2p",
                    "product": "webrtc",
                    "versions": [
                        {
                            "version": "< 6.0.28",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-15T17:28:32.567Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "libp2p is a JavaScript implementation of the libp2p networking stack. Prior to 6.0.28, the @libp2p/webrtc webRTCDirect() Node.js listener processes unauthenticated STUN Binding Requests before PeerId authentication, Noise, muxing, protocol negotiation, connection creation, or connection-manager admission. The listener in packages/transport-webrtc/src/private-to-public/utils/stun-listener.ts forwards the packet-controlled request.ufrag into DirectRTCPeerConnection.setLocalDescription, where the value is reused as an ICE password without validating its required length and character set. A short credential causes node-datachannel or libdatachannel to raise an uncaught native invalid_argument and abort the process with SIGABRT, allowing a single remote UDP packet to deny service. The confirmed impact is process termination only, with no demonstrated memory corruption, code execution, browser impact, confidentiality impact, integrity impact, or connection-limit bypass. This issue is fixed in version 6.0.28."
                }
            ],
            "source": {
                "advisory": "GHSA-x3m2-6mg8-vj7f",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-16T15:22:18.274644Z",
                                "id": "CVE-2026-103936",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-16T17:12:49.532Z"
                }
            }
        ]
    }
}