🛡️ CVE-2026-47067
⚪ Unknown ✅ No Known Exploit CWE-770 NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Allocation of Resources Without Limits or Throttling vulnerability in benoitc hackney allows Flooding. The URL parser in src/hackney_url.erl converts every unrecognized URL scheme to a permanent BEAM atom via binary_to_atom/2. BEAM atoms are never garbage-collected and the atom table defaults to a hard limit of 1,048,576 entries. An attacker who can supply URLs with attacker-chosen scheme prefixes — directly as request targets, as configured webhook URLs, or via Location headers followed during redirects — can exhaust the atom table and crash the entire BEAM VM with system_limit. This issue affects hackney: from 2.0.0 before 4.0.1.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE CWE-770
Public Exploit ✅ No
Source NVD
Published 2026-05-25
Updated 2026-06-15
Modified 2026-05-27

Affected Packages

Software From version Fixed in
hackney — —
unknown — —

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