CVE-2026-47071

7.5 HIGH
Published: May 25, 2026 Modified: May 27, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://cna.erlef.org/cves/CVE-2026-47071.html
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Third Party Advisory Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-gp9c-pm5m-5cxr
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Exploit Patch Vendor Advisory
https://osv.dev/vulnerability/EEF-CVE-2026-47071
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Third Party Advisory Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-gp9c-pm5m-5cxr
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Patch Vendor Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.7%
47th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

benoitc