{"id":"UBUNTU-CVE-2026-8368","details":"LWP::UserAgent versions before 6.83 for Perl leak Authorization and Proxy-Authorization headers on cross-origin redirects. On a 3xx response, the redirect handler strips only Host and Cookie before issuing the follow-up request. Caller-supplied Authorization and Proxy-Authorization headers are sent unchanged to the redirect target, including across scheme, host, or port changes. A redirect to an attacker controlled host therefore discloses the caller's credentials to that host.","modified":"2026-06-03T22:08:50.979572217Z","published":"2026-05-12T15:16:00Z","related":["USN-8378-1"],"upstream":["CVE-2026-8368"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-8368"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-8368"},{"type":"REPORT","url":"https://lists.security.metacpan.org/cve-announce/msg/39974665/"},{"type":"REPORT","url":"https://github.com/libwww-perl/libwww-perl/pull/512"},{"type":"REPORT","url":"https://github.com/libwww-perl/libwww-perl/pull/284"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8378-1"}],"affected":[{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.05-1","6.05-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libwww-perl","binary_version":"6.05-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}},{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.13-1","6.15-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwww-perl","binary_version":"6.15-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}},{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.15-2","6.29-1","6.31-1","6.31-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwww-perl","binary_version":"6.31-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}},{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.39-1","6.41-1","6.42-1","6.43-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwww-perl","binary_version":"6.43-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}},{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.61-1ubuntu0.1"}]}],"versions":["6.53-1","6.59-1","6.60-1","6.61-1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.61-1ubuntu0.1","binary_name":"libwww-perl"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}},{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.76-1ubuntu0.1"}]}],"versions":["6.72-1","6.76-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwww-perl","binary_version":"6.76-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}},{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.78-1ubuntu0.1"}]}],"versions":["6.78-1"],"ecosystem_specific":{"binaries":[{"binary_version":"6.78-1ubuntu0.1","binary_name":"libwww-perl"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}},{"package":{"name":"libwww-perl","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libwww-perl?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.81-1ubuntu0.1"}]}],"versions":["6.78-1","6.81-1","6.81-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwww-perl","binary_version":"6.81-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8368.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}