CVE-2026-54297: Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-54297 is a high-severity flaw (CVSS 7.5) affecting faraday. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 atta

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-674, CWE-770
Published	2026-06-24
Last modified	2026-10-25

Publisher (CNA): GitHub, Inc. · Vendor: faraday project

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-24 17:17 UTCPublished CVE record published
2026-10-25 22:10 UTCUpdated Record last modified

faraday project faraday UPGRADE

Affected: >= 1.0.0 and < 1.10.6 · >= 2.0.0 and < 2.14.3

Fixed in: 1.10.6, 2.14.3

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy faraday || rpm -q faraday || faraday --version

2. UPGRADE to 1.10.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade faraday

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade faraday

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison faraday sudo apt install faraday=<VERSION_BEFORE_1.0.0> sudo apt-mark hold faraday

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list faraday sudo dnf downgrade faraday-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add faraday

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-54297?

faraday: upgrade to 1.10.6, 2.14.3. Exact commands for each OS are on this page.

Is CVE-2026-54297 being exploited?

CVE-2026-54297 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-54297 affect?

CVE-2026-54297 affects faraday. Severity is high (CVSS 7.5). 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, decode

How urgent is CVE-2026-54297?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Ruby vulnerabilities

References

← Back to latest CVEs