{"id":"DEBIAN-CVE-2026-44394","details":"An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone federated token rescoping mechanism does not propagate the original token's expiry to the newly issued token. When a federated user rescopes a token via POST /v3/auth/tokens, the handle_scoped_token() function in the mapped authentication plugin returns response data without an expires_at value. The token provider falls back to issuing a token with a fresh default TTL. By rescoping repeatedly before each token expires, a user can maintain access indefinitely, bypassing operator-configured token lifetime policies. This is a variant of CVE-2012-3426. Only deployments using federated identity (SAML2, OpenID Connect) are affected.","modified":"2026-09-01T16:06:44.708764879Z","published":"2026-05-28T19:16:38.223Z","upstream":["CVE-2026-44394"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-44394"}],"affected":[{"package":{"name":"keystone","ecosystem":"Debian:12","purl":"pkg:deb/debian/keystone?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:22.0.2-0+deb12u3"}]}],"versions":["2:22.0.0-2","2:22.0.2-0+deb12u1","2:22.0.2-0+deb12u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44394.json"}},{"package":{"name":"keystone","ecosystem":"Debian:13","purl":"pkg:deb/debian/keystone?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:27.0.0-3+deb13u4"}]}],"versions":["2:27.0.0-3","2:27.0.0-3+deb13u1","2:27.0.0-3+deb13u3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44394.json"}},{"package":{"name":"keystone","ecosystem":"Debian:14","purl":"pkg:deb/debian/keystone?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:29.0.1-2"}]}],"versions":["2:27.0.0-3","2:28.0.0-1","2:28.0.0-2","2:28.0.0-3","2:28.0.0-4","2:28.0.0-5","2:28.0.0-6","2:28.0.0~rc1-1","2:28.0.0~rc1-2","2:28.0.0~rc1-4","2:29.0.0-1","2:29.0.0-2","2:29.0.0-3","2:29.0.0~rc1-1","2:29.0.0~rc1-2","2:29.0.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44394.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}