CVE-2025-3864 - Vulnerability Details - OpenCVE

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. Fix for this issue has been included in 1.24.0 release.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

References

Link	Providers
https://cert.pl/en/posts/2025/05/CVE-2025-3864/
https://github.com/benoitc/hackney/issues/717

History

Wed, 28 May 2025 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 28 May 2025 11:30:00 +0000

Type	Values Removed	Values Added
Description		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. Fix for this issue has been included in 1.24.0 release.
Title		Connection pool exhaustion in hackney
Weaknesses		CWE-772
References		https://cert.pl/en/posts/2025/05/CVE-2025-3864/ https://github.com/benoitc/hackney/issues/717
Metrics		cvssV4_0 `{'score': 2.3, 'vector': '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'}`

MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published: 2025-05-28T11:19:15.208Z

Updated: 2025-05-28T13:17:57.950Z

Reserved: 2025-04-22T08:43:49.641Z

Link: CVE-2025-3864

Vulnrichment

Updated: 2025-05-28T13:17:51.796Z

NVD

Status : Awaiting Analysis

Published: 2025-05-28T12:15:19.760

Modified: 2025-05-28T15:01:30.720

Link: CVE-2025-3864

Redhat

No data.

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "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": "2025-05-28T13:17:57.950Z"}, "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": "Micha\u0142 Majchrowicz, Marcin Wyczechowski, and Pawe\u0142 Zdunek \u2014 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 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\u00a01.24.0 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": "2025-05-28T11:19:15.208Z"}, "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/"}], "source": {"discovery": "UNKNOWN"}, "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"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-3864", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-05-28T13:17:43.365984Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-28T13:17:51.796Z"}}], "cna": {"tags": ["x_open-source"], "title": "Connection pool exhaustion in hackney", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Micha\u0142 Majchrowicz, Marcin Wyczechowski, and Pawe\u0142 Zdunek \u2014 members of the AFINE Team"}], "impacts": [{"capecId": "CAPEC-469", "descriptions": [{"lang": "en", "value": "CAPEC-469 HTTP DoS"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 2.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "LOW", "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", "providerUrgency": "NOT_DEFINED", "userInteraction": "PASSIVE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/benoitc/hackney", "vendor": "hackney", "product": "hackney", "versions": [{"status": "affected", "version": "0", "lessThan": "1.24.0", "versionType": "semver"}], "defaultStatus": "unknown"}], "datePublic": "2025-05-27T10:05:00.000Z", "references": [{"url": "https://github.com/benoitc/hackney/issues/717", "tags": ["issue-tracking"]}, {"url": "https://cert.pl/en/posts/2025/05/CVE-2025-3864/", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "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\u00a01.24.0 release.", "supportingMedia": [{"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 1.24.0 release.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-772", "description": "CWE-772 Missing Release of Resource after Effective Lifetime"}]}], "providerMetadata": {"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2025-05-28T11:19:15.208Z"}}}, "cveMetadata": {"cveId": "CVE-2025-3864", "state": "PUBLISHED", "dateUpdated": "2025-05-28T13:17:57.950Z", "dateReserved": "2025-04-22T08:43:49.641Z", "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "datePublished": "2025-05-28T11:19:15.208Z", "assignerShortName": "CERT-PL"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "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\u00a01.24.0 release."}], "id": "CVE-2025-3864", "lastModified": "2025-05-28T15:01:30.720", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cvd@cert.pl", "type": "Secondary"}]}, "published": "2025-05-28T12:15:19.760", "references": [{"source": "cvd@cert.pl", "url": "https://cert.pl/en/posts/2025/05/CVE-2025-3864/"}, {"source": "cvd@cert.pl", "url": "https://github.com/benoitc/hackney/issues/717"}], "sourceIdentifier": "cvd@cert.pl", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-772"}], "source": "cvd@cert.pl", "type": "Primary"}]}