{"id":"USN-8190-1","summary":"ruby-rack-session vulnerability","details":"SeungMyung Lee discovered that Rack::Session did not properly reject\ncookies upon decryption failure. A remote attacker could use this issue to\nmanipulate session contents and possibly gain unauthorized access.","modified":"2026-04-27T18:47:52.922566Z","published":"2026-04-20T15:18:34Z","related":["UBUNTU-CVE-2026-39324"],"upstream":["CVE-2026-39324","UBUNTU-CVE-2026-39324"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8190-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-39324"}],"affected":[{"package":{"name":"ruby-rack-session","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/ruby-rack-session@2.1.1-0.1ubuntu0.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-0.1ubuntu0.1"}]}],"versions":["2.1.1-0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"2.1.1-0.1ubuntu0.1","binary_name":"ruby-rack-session"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8190-1.json","cves_map":{"ecosystem":"Ubuntu:25.10","cves":[{"id":"CVE-2026-39324","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}}],"schema_version":"1.7.5"}