Skip to content
Fencer Intel
high 7.5

CVE-2026-54297 json

Faraday: Uncontrolled recursion in NestedParamsEncoder allows stack exhaustion DoS via deeply nested query parameters

published 4mo ago modified 17d ago also GHSA-98m9-hrrm-r99r , EUVD-2026-38812

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters. From 1.0.0 until 1.10.6 and 2.14.3, Faraday::NestedParamsEncoder, the default nested query parameter encoder/decoder in Faraday, decodes nested query strings without enforcing a maximum nesting depth. A crafted query string causes Faraday to build a deeply nested Ruby Hash structure. The internal dehash routine then recursively walks this attacker-controlled structure without a depth limit. At sufficient depth, Ruby raises an uncaught SystemStackError (stack level too deep), crashing the calling thread or worker. This can lead to denial of service in applications that pass attacker-controlled query strings to Faraday's nested query parsing or URL-building paths. This vulnerability is fixed in 1.10.6 and 2.14.3.

Patch / fix

  • rubygems faraday 1.10.6, 2.14.3
  • Red Hat Red Hat Satellite 6.16 for RHEL 8 0:1.10.6-1.el8sat
  • Red Hat Red Hat Satellite 6.16 for RHEL 9 0:1.10.6-1.el9sat
  • Red Hat Red Hat Satellite 6.17 for RHEL 9 0:1.10.6-1.el9sat
  • Red Hat Red Hat Satellite 6.18 for RHEL 9 0:1.10.6-1.el9sat
  • Red Hat Red Hat Satellite 6.19 for RHEL 9 0:1.10.6-1.el9sat
  • ruby-faraday Debian 14 2.14.3-1

debian advisories DEBIAN-CVE-2026-54297

  • openvox-agent satellite capsule 6.18, satellite capsule 6.17, satellite capsule 6.16 +3 more 8.24.1-3.el9sat
  • openvox-server satellite capsule 6.19, satellite capsule 6.18, satellite capsule 6.17 +5 more 8.14.1-1.el9sat
  • rubygem-faraday satellite capsule 6.19, satellite capsule 6.18, satellite capsule 6.17 +5 more 1.10.6-1.el9sat
  • rubygem-katello satellite 6.18 4.18.0.15-1.el9sat
  • python3.12-pyjwt satellite capsule 6.18, satellite 6.18 2.13.0-1.el9pc
  • rubygem-nokogiri satellite capsule 6.18, satellite capsule 6.17, satellite capsule 6.16 +3 more 1.15.7-3.el9sat
  • python3.12-pillow satellite capsule 6.19, satellite capsule 6.18, satellite 6.19 +1 more 12.3.0-1.el9pc
  • python3.12-pyjwt+crypto satellite capsule 6.18, satellite 6.18 2.13.0-1.el9pc

red hat advisories RHSA-2026:50263RHSA-2026:50222RHSA-2026:50223RHSA-2026:50221

Is CVE-2026-54297 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-54297 updated cvss 7.5

faraday: Faraday: Denial of Service via crafted nested query strings

  • Red Hat 3scale API Management Platform 2 3scale-amp2/zync-rhel8, 3scale-amp2/zync-rhel9, 3scale-amp2/system-rhel9 Red Hat Satellite 6 rubygem-faraday, rubygem-faraday-rack, rubygem-faraday-excon, rubygem-faraday-retry, rubygem-faraday-patron, rubygem-faraday-em_http, +7 more
    affected: workaround, no fix available
  • Red Hat Satellite 6.16 for RHEL 8 rubygem-faraday 1.10.6-1.el8sat Red Hat Satellite 6.16 for RHEL 9 rubygem-faraday 1.10.6-1.el9sat
    fixed: vendor fix RHSA-2026:50223
  • Red Hat Satellite 6.17 for RHEL 9 rubygem-faraday 1.10.6-1.el9sat
    fixed: vendor fix RHSA-2026:50222
  • Red Hat Satellite 6.18 for RHEL 9 rubygem-faraday 1.10.6-1.el9sat
    fixed: vendor fix RHSA-2026:50263
  • Red Hat Satellite 6.19 for RHEL 9 rubygem-faraday 1.10.6-1.el9sat
    fixed: vendor fix RHSA-2026:50221
  • Red Hat 3scale API Management Platform 2 3scale-amp21/zync, 3scale-amp22/zync, 3scale-amp21/system, 3scale-amp22/system, 3scale-amp2/system-rhel7, 3scale-amp2/system-rhel8
    not affected: component not present
  • Red Hat Satellite 6.16 for RHEL 8 libsolv 0.7.20-7.el8sat, satellite 6.16.12-1.el8sat, python-pyjwt 2.13.0-1.el8pc, python-pillow 12.3.0-1.el8pc, python3-solv 0.7.20-7.el8sat, openvox-agent 8.24.1-3.el8sat, +17 more Red Hat Satellite 6.16 for RHEL 9 satellite 6.16.12-1.el9sat, python-pyjwt 2.13.0-1.el9pc, python-pillow 12.3.0-1.el9pc, openvox-agent 8.24.1-3.el9sat, openvox-server 8.14.1-1.el9sat, satellite-cli 6.16.12-1.el9sat, +15 more Red Hat Satellite 6.17 for RHEL 9 satellite 6.17.10-1.el9sat, python-pyjwt 2.13.0-1.el9pc, python-pillow 12.3.0-1.el9pc, openvox-agent 8.24.1-3.el9sat, openvox-server 8.14.1-1.el9sat, satellite-cli 6.17.10-1.el9sat, +17 more Red Hat Satellite 6.18 for RHEL 9 satellite 6.18.8-1.el9sat, openvox-agent 8.24.1-3.el9sat, satellite-cli 6.18.8-1.el9sat, openvox-server 8.14.1-1.el9sat, python3.12-pyjwt 2.13.0-1.el9pc, python3.12-pillow 12.3.0-1.el9pc, +14 more Red Hat Satellite 6.19 for RHEL 9 foreman 3.18.0.8-1.el9sat, satellite 6.19.3-1.el9sat, foreman-cli 3.18.0.8-1.el9sat, foreman-ec2 3.18.0.8-1.el9sat, foreman-pcp 3.18.0.8-1.el9sat, satellite-cli 6.19.3-1.el9sat, +22 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
4mo ago

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • github.com https://github.com/lostisland/faraday/security/advisories/GHSA-98m9-hrrm-r99r referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
rubygems faraday
>=2.0.0, <2.14.3
>=1.0.0, <1.10.6
2.14.3
1.10.6

Affected products

  • lostisland faraday
  • Red Hat Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Red Hat Satellite 6.19 for RHEL 9
  • Red Hat Red Hat 3scale API Management Platform 2
  • Red Hat Red Hat Satellite 6

Classification

Weakness
  • CWE-674 Uncontrolled Recursion
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.