Uncontrolled Recursion in faraday - CVE-2026-54297
Published: November 10, 2026
Vulnerability identifier: #VU164355
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2026-54297
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service through stack exhaustion in applications using Faraday.
The vulnerability exists due to uncontrolled recursion without a maximum nesting depth in Faraday::NestedParamsEncoder's dehash routine when processing attacker-controlled nested query strings. A remote attacker can supply deeply nested query parameters through applications using Faraday::Utils.parse_nested_query or Faraday URL construction to trigger an uncaught SystemStackError and crash the calling thread or worker.
Affected software
faraday
openEuler
rubygem-faraday
rubygem-faraday-doc
IBM Watson Discovery for IBM Cloud Pak for Data
openEuler
rubygem-faraday
rubygem-faraday-doc
IBM Watson Discovery for IBM Cloud Pak for Data
How to mitigate CVE-2026-54297
Install security update from vendor's website.
faraday - addressed in versions 1.10.6, 2.14.3
rubygem-faraday - addressed in versions 1.7.0-2, 1.8.0-2
rubygem-faraday-doc - addressed in versions 1.7.0-2, 1.8.0-2
IBM Watson Discovery for IBM Cloud Pak for Data - update to 5.4.2
rubygem-faraday - addressed in versions 1.7.0-2, 1.8.0-2
rubygem-faraday-doc - addressed in versions 1.7.0-2, 1.8.0-2
IBM Watson Discovery for IBM Cloud Pak for Data - update to 5.4.2