What is CVE-2026-47077?

CVE-2026-47077 is a high-severity vulnerability in Benoitc Hackney, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-25.

How severe is CVE-2026-47077?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Benoitc Hackney

CVE-2026-47077

Allocation of Resources Without Limits or Throttling vulnerability in benoitc hackney allows Flooding. hackney_h3:await_response_loop/6 accumulates the HTTP/3 response body in memory without any size cap. The after Timeout clause is a per-…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.000 (15.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Benoitc Hackney — versions 2.0.0, 0334af206d5099fdf510ed9eda18e34396f065ad

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, Exploit, vendor-advisory, Patch, Vendor Advisory)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, Patch, Third Party Advisory)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, Patch, Third Party Advisory)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (Patch, patch)

Frequently asked questions

What is CVE-2026-47077?: CVE-2026-47077 is a high-severity vulnerability in Benoitc Hackney, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-25.
How severe is CVE-2026-47077?: High severity. CVSS v3 base score is 7.5 out of 10.