Answer in brief
CVE-2026-54297 records a High severity (CVSS 7.5) vulnerability in Faraday: Uncontrolled recursion in NestedParamsEncoder allows stack exhaustion DoS via deeply nested query parameters. The current sources do not mark it as known exploited. The current feed maps lostisland/faraday (generic), faraday (rubygems), faraday (rubygems), faraday (rubygems) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps lostisland/faraday (generic), faraday (rubygems), faraday (rubygems), faraday (rubygems) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:faraday_project:faraday:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| lostisland/faradaygeneric | >=1.0.0 <1.10.6 || >=2.0.0.alpha.pre.1 <2.14.3 | 1.10.6, 2.14.3 |
| faradayrubygems | <=2.14.2 | 2.14.3 |
| faradayrubygems | >=2.0.0,<=2.14.2 | 2.14.3 |
| faradayrubygems | >=1.0.0,<=1.10.5 | 1.10.6 |
| faradayrubygems | >=2.0.0 <2.14.3 | 2.14.3 |
| faradayrubygems | >=1.0.0 <1.10.6 | 1.10.6 |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.