{"id":"UBUNTU-CVE-2026-54171","details":"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.","modified":"2026-07-29T10:19:05.845846053Z","published":"2026-07-17T20:17:00Z","upstream":["CVE-2026-54171"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-54171"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-54171"},{"type":"REPORT","url":"https://github.com/excon/excon/security/advisories/GHSA-48rx-c7pg-q66r"},{"type":"REPORT","url":"https://github.com/excon/excon/pull/901"}],"affected":[{"package":{"name":"ruby-excon","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ruby-excon?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.45.1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-excon","binary_version":"0.45.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54171.json"}},{"package":{"name":"ruby-excon","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ruby-excon?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.54.0-1","0.60.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.60.0-1","binary_name":"ruby-excon"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54171.json"}},{"package":{"name":"ruby-excon","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ruby-excon?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.60.0-1","0.60.0-2","0.72.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-excon","binary_version":"0.72.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54171.json"}},{"package":{"name":"ruby-excon","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ruby-excon?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.79.0-2","0.88.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-excon","binary_version":"0.88.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54171.json"}},{"package":{"name":"ruby-excon","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/ruby-excon?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.88.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-excon","binary_version":"0.88.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54171.json"}},{"package":{"name":"ruby-excon","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/ruby-excon?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.112.0-4","1.3.1-1","1.3.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-excon","binary_version":"1.3.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54171.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}