CVE-2026-54171
MEDIUMExcon: redact additional sensitive/risky headers when following redirects
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r
X_Refsource_Misc x_refsource_misc
https://github.com/excon/excon/pull/901
X_Refsource_Misc x_refsource_misc
https://github.com/excon/excon/commit/ea89a35308a12f4b791b6c50f2cbd33f94889fa3
Scores
CVSS v3
6.5
EPSS
0.0030
EPSS Percentile
22.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-201
Status
published
Products (3)
excon/excon
< 1.5.0
excon_project/excon
< 1.5.0
rubygems/excon
0 - 1.5.0RubyGems
Published
Jul 17, 2026
Tracked Since
Jul 18, 2026