CVE-2026-47067

Published: Mag 25, 2026 Last Modified: Mag 25, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,7
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0004
Percentile
0,1th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

770

Allocation of Resources Without Limits or Throttling

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
https://cna.erlef.org/cves/CVE-2026-47067.html
https://cna.erlef.org/cves/CVE-2026-47067.html
https://github.com/benoitc/hackney/commit/31f6f0e27e096ad88…
https://github.com/benoitc/hackney/commit/31f6f0e27e096ad88743dfded4f030a3ee749…
https://github.com/benoitc/hackney/security/advisories/GHSA…
https://github.com/benoitc/hackney/security/advisories/GHSA-9653-rcfr-5c62
https://osv.dev/vulnerability/EEF-CVE-2026-47067
https://osv.dev/vulnerability/EEF-CVE-2026-47067