Bug 2529406

Summary: CVE-2026-54171 rubygem-excon: Excon: Information disclosure via unstripped sensitive headers during redirects [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: rubygem-exconAssignee: Vít Ondruch <vondruch>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: tdawson, vondruch
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["a2e8e3f2-c495-4b6e-b6da-daa34d6af2e1"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2501952    

Description Ganesh 2026-09-07 12:10:14 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.