GHSA-9fm9-hp7p-53mf

Hackney fails to properly release HTTP connections to the pool

Source: GitHub Advisory Database (reviewed) Low CVE-2025-3864

Packages

Ecosystem	Package	Affected	Fixed in
Hex	hackney	< 1.24.0	1.24.0

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2025-3864 advisory
https://github.com/benoitc/hackney/issues/717 web
https://github.com/benoitc/hackney/commit/8f13ddac50d1626f8b9a47a08bd599e4efe1773d web
https://cert.pl/en/posts/2025/05/CVE-2025-3864 web
https://github.com/benoitc/hackney package