CVE-2025-3864

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 in1.24.0 release.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
UNKNOWN
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CERT-PLCNA
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CISA-ADPADP
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 36%
Common Weakness Enumeration
References
https://cert.pl/en/posts/2025/05/CVE-2025-3864/
https://github.com/benoitc/hackney/issues/717