CVE-2026-54171 | Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.… | CVSS 6.5 MEDIUM

Description

Excon is usable, fast, simple HTTP 1.1 for Ruby. Prior to 1.5.0, Excon's RedirectFollower middleware failed to strip additional sensitive headers when following redirects and did not provide a custom list of headers to strip. This could cause inadvertent leakage of sensitive data when the initial request includes header information that is not intended for the new target. This issue is fixed in version 1.5.0.

Metadata

CVE ID: CVE-2026-54171
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-11 21:46 UTC
Published: 2026-07-17 20:09 UTC
Last updated: 2026-07-17 20:09 UTC
Primary CWE: CWE-201
CWE-201: Insertion of Sensitive Information Into Sent Data
Vendor / Product: excon / excon
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products (1)

Vendor	Product	Platform	Versions
excon	excon	—	< 1.5.0

Weakness (CWE)

CWE	Source	Description
CWE-201	cna	CWE-201: Insertion of Sensitive Information Into Sent Data

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References (3)

https://github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r https://github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r
https://github.com/excon/excon/pull/901 https://github.com/excon/excon/pull/901
https://github.com/excon/excon/commit/ea89a35308a12f4b791b6c50f2cbd33f94889fa3 https://github.com/excon/excon/commit/ea89a35308a12f4b791b6c50f2cbd33f94889fa3