{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-3864",
        "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
        "state": "PUBLISHED",
        "assignerShortName": "CERT-PL",
        "dateReserved": "2025-04-22T08:43:49.641Z",
        "datePublished": "2025-05-28T11:19:15.208Z",
        "dateUpdated": "2026-01-26T12:13:02.411Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unknown",
                    "product": "hackney",
                    "repo": "https://github.com/benoitc/hackney",
                    "vendor": "hackney",
                    "versions": [
                        {
                            "lessThan": "1.24.0",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Michał Majchrowicz, Marcin Wyczechowski, and Paweł Zdunek — members of the AFINE Team"
                }
            ],
            "datePublic": "2025-05-27T10:05:00.000Z",
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "Hackney fails to properly release HTTP connections to the pool after handling 307 Temporary Redirect responses. Remote attackers can exploit this to exhaust connection pools, causing denial of service in applications using the library.<br>Fix for this issue has been included in&nbsp;1.24.0 release."
                        }
                    ],
                    "value": "Hackney fails to properly release HTTP connections to the pool after handling 307 Temporary Redirect responses. Remote attackers can exploit this to exhaust connection pools, causing denial of service in applications using the library.\nFix for this issue has been included in 1.24.0 release."
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-469",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-469 HTTP DoS"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "attackVector": "NETWORK",
                        "baseScore": 2.3,
                        "baseSeverity": "LOW",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "userInteraction": "PASSIVE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "LOW",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-772",
                            "description": "CWE-772 Missing Release of Resource after Effective Lifetime",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
                "shortName": "CERT-PL",
                "dateUpdated": "2026-01-26T12:13:02.411Z"
            },
            "references": [
                {
                    "tags": [
                        "issue-tracking"
                    ],
                    "url": "https://github.com/benoitc/hackney/issues/717"
                },
                {
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://cert.pl/en/posts/2025/05/CVE-2025-3864/"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/benoitc/hackney/commit/8f13ddac50d1626f8b9a47a08bd599e4efe1773d"
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "tags": [
                "x_open-source"
            ],
            "title": "Connection pool exhaustion in hackney",
            "x_generator": {
                "engine": "Vulnogram 0.2.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-05-28T13:17:43.365984Z",
                                "id": "CVE-2025-3864",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2025-05-28T13:17:57.950Z"
                }
            }
        ]
    }
}