CVE-2025-3864
lowpriority · track · 0EPSS 0.009 · 59 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-9fm9-hp7p-53mfHackney fails to properly release HTTP connections to the pool2025-05-28ghsa · osvUS
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.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://cert.pl/en/posts/2025/05/CVE-2025-3864/cnnvd
- https://github.com/benoitc/hackney/issues/717cnnvd
- https://github.com/benoitc/hackney/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-3864cnnvd
- https://cert.pl/en/posts/2025/05/CVE-2025-3864/enisa_euvd
- https://github.com/benoitc/hackney/commit/8f13ddac50d1626f8b9a47a08bd599e4efe1773denisa_euvd
- https://github.com/benoitc/hackney/issues/717enisa_euvd
- https://cert.pl/en/posts/2025/05/CVE-2025-3864/nvd
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