CVE-2026-47071

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Source

https://cve.org/CVERecord?id=CVE-2026-47071

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47071.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-47071

Aliases

Published

2026-05-25T14:00:41.112Z

Modified

2026-07-08T08:13:37.389017603Z

Severity

8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

SOCKS5 TLS upgrade ignores caller timeout in hackney

Details

Uncontrolled Resource Consumption vulnerability in benoitc hackney allows Flooding. The SOCKS5 transport in src/hackneysocks5.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 connecttimeout or recv_timeout options supplied by the caller.

This issue affects hackney: from 0.10.0 before 4.0.1.

Database specific

{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "34cdbd1d20a282aacc286a89327465a3925b4c5d"
                },
                {
                    "fixed": "5ccdab725c561a6f03d05a51f2d0664f98236dae"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47071.json",
    "cna_assigner": "EEF",
    "cwe_ids": [
        "CWE-400"
    ]
}

References

Affected packages

Git / github.com/benoitc/hackney

Affected ranges

Type

GIT

Repo

https://github.com/benoitc/hackney

Events

Introduced

5a59f57206cd5d2747a487b3cd3ef03cea3a64ae

Fixed

c41c8d48ace8141b003f6f1de3ca6734a0c53056

Fixed

5ccdab725c561a6f03d05a51f2d0664f98236dae

Database specific

{
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0.10.0"
        },
        {
            "fixed": "4.0.1"
        }
    ]
}

Affected versions

0.*

0.10.0

0.10.1

0.11.0

0.11.1

0.11.2

0.12.0

0.12.1

0.13.0

0.13.1

0.14.0

0.14.1

0.14.2

0.14.3

0.15.0

0.15.1

0.15.2

0.16.0

1.*

1.0.0

1.0.1

1.0.2

1.0.3

1.0.4

1.0.5

1.0.6

1.1.0

1.10.0

1.10.1

1.11.0

1.12.0

1.12.1

1.13.0

1.14.0

1.14.2

1.14.3

1.15.0

1.15.1

1.15.2

1.16.0

1.17.0

1.17.1

1.17.2

1.17.3

1.17.4

1.18.0

1.18.1

1.18.2

1.19.0

1.19.1

1.2.0

1.20.0

1.20.1

1.21.0

1.22.0

1.23.0

1.24.0

1.24.1

1.25.0

1.3.0

1.3.1

1.3.2

1.4.0

1.4.1

1.4.10

1.4.2

1.4.3

1.4.4

1.4.5

1.4.6

1.4.7

1.4.8

1.4.9

1.5.0

1.5.1

1.5.4

1.5.5

1.5.6

1.5.7

1.6.0

1.6.1

1.6.2

1.6.3

1.6.4

1.6.5

1.6.6

1.7.0

1.7.1

1.8.0

1.8.2

1.8.3

1.8.4

1.8.5

1.8.6

1.9.0

2.*

2.0.0

2.0.0-beta.1

2.0.1

3.*

3.0.1

3.0.2

3.0.3

3.1.0

3.1.1

3.1.2

3.2.0

3.2.1

4.*

4.0.0

v1.*

v1.17.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47071.json"