{"id":"DEBIAN-CVE-2026-67355","details":"guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the request host in the Domain field instead of marking cookies as host-only. Attackers controlling child hosts can receive host-only cookies intended only for parent hosts, potentially disclosing session identifiers and authorization tokens when the same cookie jar is reused across trust boundaries.","modified":"2026-09-09T09:00:43.047810439Z","published":"2026-08-01T13:17:06.283Z","upstream":["CVE-2026-67355"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-67355"}],"affected":[{"package":{"name":"guzzle","ecosystem":"Debian:12","purl":"pkg:deb/debian/guzzle?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.11.0-1","7.12.0-1","7.12.1-1","7.12.3-1","7.13.1-1","7.14.0-1","7.14.1-1","7.14.2-1","7.15.0-1","7.15.1-1","7.15.2-1","7.15.3-1","7.15.5-1","7.4.5-1","7.9.2-0.1","8.0.1-1","8.0.2-1","8.1.0-1","8.2.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67355.json"}},{"package":{"name":"guzzle","ecosystem":"Debian:13","purl":"pkg:deb/debian/guzzle?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.11.0-1","7.12.0-1","7.12.1-1","7.12.3-1","7.13.1-1","7.14.0-1","7.14.1-1","7.14.2-1","7.15.0-1","7.15.1-1","7.15.2-1","7.15.3-1","7.15.5-1","7.9.2-0.1","8.0.1-1","8.0.2-1","8.1.0-1","8.2.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67355.json"}},{"package":{"name":"guzzle","ecosystem":"Debian:14","purl":"pkg:deb/debian/guzzle?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.15.1-1"}]}],"versions":["7.11.0-1","7.12.0-1","7.12.1-1","7.12.3-1","7.13.1-1","7.14.0-1","7.14.1-1","7.14.2-1","7.15.0-1","7.9.2-0.1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-67355.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}