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TI-2026-39193 Aliases CVE-2026-54297GHSA-98m9-hrrm-r99r

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

Priority HIGH 72CWE-674Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 5 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-674.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00757 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial faraday (lostisland): 1.10.6, 2.14.3faraday (RubyGems): 2.14.3, 1.10.6Red Hat: 4 advisoriesRed Hat: 5 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
lostislandfaraday1.0.0 to before 1.10.6; 2.0.0.alpha.pre.1 to before 2.14.31.10.6, 2.14.3Patch availableCNA
—faraday (RubyGems)2.0.0 to before 2.14.32.14.3Patch availableGHSA-98m9-hrrm-r99r
—faraday (RubyGems)1.0.0 to before 1.10.61.10.6Patch availableGHSA-98m9-hrrm-r99r
  • faraday Vendorlostisland Affected 1.0.0 to before 1.10.6; 2.0.0.alpha.pre.1 to before 2.14.3 Fixed in 1.10.6, 2.14.3 Patch available CNA
  • faraday (RubyGems) Vendor— Affected 2.0.0 to before 2.14.3 Fixed in 2.14.3 Patch available GHSA-98m9-hrrm-r99r
  • faraday (RubyGems) Vendor— Affected 1.0.0 to before 1.10.6 Fixed in 1.10.6 Patch available GHSA-98m9-hrrm-r99r

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:faraday_project:faraday:*:*:*:*:*:*:*:*1.0.0 to before 1.10.6; 2.0.0 to before 2.14.3Vulnerablelostisland
  • cpe:2.3:a:faraday_project:faraday:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.10.6; 2.0.0 to before 2.14.3 Vulnerable ·lostisland

Remediation

  • Fix · CNA faraday (lostisland) Fixed in 1.10.6, 2.14.3
  • Fix · GHSA-98m9-hrrm-r99r faraday (RubyGems) Fixed in 2.14.3 Advisory →
  • Fix · GHSA-98m9-hrrm-r99r faraday (RubyGems) Fixed in 1.10.6 Advisory →

Red Hat 4 advisories

  • RHSA-2026:50263 Released 2026-08-04 · Red Hat rating Important
    Satellite 6.18.8 Async Update
    • Red Hat Satellite 6.18 for RHEL 9 openvox-agent-8.24.1-3.el9sat, openvox-server-8.14.1-1.el9sat, python3.12-pillow-12.3.0-1.el9pc +5
  • RHSA-2026:50223 Released 2026-08-04 · Red Hat rating Important
    Satellite 6.16.12 Async Update
    • Red Hat Satellite 6.16 for RHEL 8 libsolv-1:0.7.20-7.el8sat, openvox-agent-8.24.1-3.el8sat, openvox-server-8.14.1-1.el8sat +9
    • Red Hat Satellite 6.16 for RHEL 9 openvox-agent-8.24.1-3.el9sat, openvox-server-8.14.1-1.el9sat, python-pillow-12.3.0-1.el9pc +7
  • RHSA-2026:50222 Released 2026-08-04 · Red Hat rating Important
    Satellite 6.17.10 Async Update
    • Red Hat Satellite 6.17 for RHEL 9 openvox-agent-8.24.1-3.el9sat, openvox-server-8.14.1-1.el9sat, python-pillow-12.3.0-1.el9pc +7
Show 1 more Red Hat advisories
  • RHSA-2026:50221 Released 2026-08-04 · Red Hat rating Important
    Satellite 6.19.3 Async Update
    • Red Hat Satellite 6.19 for RHEL 9 openvox-server-8.14.1-1.el9sat, python3.12-pillow-12.3.0-1.el9pc, rubygem-faraday-1.10.6-1.el9sat +2

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat 3scale API Management Platform 2AffectedNo fix yet
Red Hat Satellite 6AffectedNo fix yet
Red Hat Satellite 6.16 for RHEL 8Fixed RHSA-2026:50223
Red Hat Satellite 6.16 for RHEL 9Fixed RHSA-2026:50223
Red Hat Satellite 6.17 for RHEL 9Fixed RHSA-2026:50222
Red Hat Satellite 6.18 for RHEL 9Fixed RHSA-2026:50263
Red Hat Satellite 6.19 for RHEL 9Fixed RHSA-2026:50221
Not affected: 6 products
  • Red Hat 3scale API Management Platform 2
  • Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Satellite 6.19 for RHEL 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54297
  2. 2026-10-03 Alias added: GHSA-98m9-hrrm-r99r

References

Exploit 1

Advisory 1

Other 4

  • TI-2026-26018 Faraday: Protocol-relative URI objects still bypass host scoping (possible incomplete fix for GHSA-33mh-2634-fwr2) CVSS 3.1MEDIUM 6.5
  • TI-2026-20832 Faraday affected by SSRF via protocol-relative URL host override in build_exclusive_url CVSS 3.1MEDIUM 5.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences