CVE-2025-3864 | THREATINT

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.

PUBLISHED Reserved 2025-04-22 | Published 2025-05-28 | Updated 2026-01-26 | Assigner CERT-PL

LOW: 2.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-772 Missing Release of Resource after Effective Lifetime

Product status

Default status

unknown

Any version before 1.24.0

affected

Credits

Michał Majchrowicz, Marcin Wyczechowski, and Paweł Zdunek — members of the AFINE Team finder

References

github.com/benoitc/hackney/issues/717 issue-tracking

cert.pl/en/posts/2025/05/CVE-2025-3864/ third-party-advisory

github.com/...ommit/8f13ddac50d1626f8b9a47a08bd599e4efe1773d patch

cve.org (CVE-2025-3864)

nvd.nist.gov (CVE-2025-3864)

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