CVE-2026-54297: lostisland faraday · Uncontrolled Recursion
Affects lostisland faradaySource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 2.14.3 or 1.10.6 soon.
Data as of 5 Nov 2026, 23:24 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.14.3, 1.10.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade lostisland faraday to 2.14.3 or 1.10.6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| lostislandfaraday | Affected
| Fixed in
|
| lostislandfaraday | Affected
| Fixed in
|
RubyGemsfaradaypkg:gem/faradayOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in Faraday versions 1.10.6 and 2.14.3. Users should upgrade to these or later versions to remediate the vulnerability. Red Hat currently states that no alternative mitigation is available that meets their criteria for ease of use and applicability. Therefore, upgrading to a fixed version is the recommended action.
Description
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.
References
- github.com/lostisland/faraday/security/advisories/GHSA-98m9-hrrm-r99r (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-54297 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2492252 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54297.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:50223 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:50222 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:50263 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:50221 (opens in a new tab)