cvedb.io
CVE-2026-47071
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-05-25T15:16:22.143 · Last modified 2026-06-17T10:54:17.810

Summary

Uncontrolled Resource Consumption vulnerability in benoitc hackney allows Flooding. The SOCKS5 transport in src/hackney_socks5.erl correctly applies the caller-supplied timeout to the SOCKS5 negotiation phase, but then upgrades the connection to TLS using the two-argument form ssl:connect/2, which defaults to an infinite timeout. The Timeout value is in scope at the call site but is not forwarded. A hostile SOCKS5 proxy that completes the SOCKS5 handshake normally and then goes silent (or sends a partial TLS ServerHello and stalls) will cause the connecting process to block indefinitely, regardless of the connect_timeout or recv_timeout options supplied by the caller. This issue affects hackney: from 0.10.0 before 4.0.1.

Affected products

benoitc — hackney

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.