{"id":"CVE-2026-44394","aliases":["DEBIAN-CVE-2026-44394","EUVD-2026-33243","GHSA-whqr-fgm5-x77q","PYSEC-2026-603","UBUNTU-CVE-2026-44394"],"status":"published","title":"OpenStack Keystone's federated token rescoping mechanism doesn't propagate the original token's expiry to the newly issued token","description":"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.","severity":{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00249,"percentile":0.16383,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2026-05-28T00:00:00Z","modified":"2026-10-28T02:30:49Z","fixes":[{"ecosystem":"PyPI","package":"keystone","fixed_in":["27.0.2","28.0.2","29.0.2"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"keystone","fixed_in":["2:22.0.2-0+deb12u3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"keystone","fixed_in":["2:27.0.0-3+deb13u4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"keystone","fixed_in":["2:29.0.1-2"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"keystone","fixed_in":["2:21.0.1-0ubuntu2.4"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"keystone","fixed_in":["2:25.0.0-0ubuntu1.4"],"sources":["osv"]},{"ecosystem":"Ubuntu:25.10","package":"keystone","fixed_in":["2:28.0.0-0ubuntu1.3"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"keystone","fixed_in":["2:29.0.0-0ubuntu1.2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"27.0.2"}]}]},{"source":"ghsa","ecosystem":"PyPI","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"28.0.0"},{"fixed":"28.0.2"}]}]},{"source":"ghsa","ecosystem":"PyPI","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"29.0.0"},{"fixed":"29.0.2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"keystone","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"]},{"source":"osv","ecosystem":"Debian:13","package":"keystone","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"]},{"source":"osv","ecosystem":"Debian:14","package":"keystone","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"]},{"source":"osv","ecosystem":"PyPI","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"27.0.2"}]}],"versions":["14.0.0","14.0.1","14.1.0","14.2.0","15.0.0","15.0.0.0rc1","15.0.0.0rc2","15.0.1","16.0.0","16.0.0.0rc1","16.0.0.0rc2","16.0.1","16.0.2","17.0.0","17.0.0.0rc1","17.0.0.0rc2","17.0.1","18.0.0","18.0.0.0rc1","18.1.0","19.0.0","19.0.0.0rc1","19.0.0.0rc2","19.0.1","20.0.0","20.0.0.0rc1","20.0.1","21.0.0","21.0.0.0rc1","21.0.1","22.0.0","22.0.0.0rc1","22.0.1","22.0.2","23.0.0","23.0.0.0rc1","23.0.1","23.0.2","24.0.0","24.0.0.0rc1","24.1.0","25.0.0","25.0.0.0rc1","26.0.0","26.0.0.0rc1","26.1.0","26.1.1","27.0.0","27.0.0.0rc1","27.0.1"]},{"source":"osv","ecosystem":"PyPI","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"28.0.0"},{"fixed":"28.0.2"}]}],"versions":["28.0.0","28.0.1"]},{"source":"osv","ecosystem":"PyPI","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"29.0.0"},{"fixed":"29.0.2"}]}],"versions":["29.0.0","29.0.1"]},{"source":"osv","ecosystem":"PyPI","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"14.0.0"},{"fixed":"27.0.2"},{"introduced":"28.0.0"},{"fixed":"28.0.2"},{"introduced":"29.0.0"},{"fixed":"29.0.2"}]}],"versions":["14.0.0","14.0.1","14.1.0","14.2.0","15.0.0","15.0.0.0rc1","15.0.0.0rc2","15.0.1","16.0.0","16.0.0.0rc1","16.0.0.0rc2","16.0.1","16.0.2","17.0.0","17.0.0.0rc1","17.0.0.0rc2","17.0.1","18.0.0","18.0.0.0rc1","18.1.0","19.0.0","19.0.0.0rc1","19.0.0.0rc2","19.0.1","20.0.0","20.0.0.0rc1","20.0.1","21.0.0","21.0.0.0rc1","21.0.1","22.0.0","22.0.0.0rc1","22.0.1","22.0.2","23.0.0","23.0.0.0rc1","23.0.1","23.0.2","24.0.0","24.0.0.0rc1","24.1.0","25.0.0","25.0.0.0rc1","26.0.0","26.0.0.0rc1","26.1.0","26.1.1","27.0.0","27.0.0.0rc1","27.0.1","28.0.0","28.0.1","29.0.0","29.0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:8.0.0-0ubuntu1","2:9.0.0~b1-0ubuntu1","2:9.0.0~b2-0ubuntu1","2:9.0.0~b3-0ubuntu1","2:9.0.0~rc1-0ubuntu1","2:9.0.0-0ubuntu1","2:9.0.2-0ubuntu1","2:9.0.2-0ubuntu2","2:9.1.0-0ubuntu1","2:9.2.0-0ubuntu1","2:9.3.0-0ubuntu1","2:9.3.0-0ubuntu2","2:9.3.0-0ubuntu3","2:9.3.0-0ubuntu3.1","2:9.3.0-0ubuntu3.2","2:9.3.0-0ubuntu3.2+esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"keystone","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions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Tracking","Patch","Third Party Advisory","web","fix","report"]},{"url":"https://security.openstack.org/ossa/OSSA-2026-015.html","tags":["Patch","Vendor Advisory","web","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44394","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2026-603.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-whqr-fgm5-x77q","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44394.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-44394","tags":["advisory"]},{"url":"https://github.com/openstack/keystone","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-44394","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-44394","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8433-1","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-44394","description":"An issue was discovered in OpenStack Keystone before 29.0.2. 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Only deployments using federated identity (SAML2, OpenID Connect) are affected.","status":"published","published":"2026-05-28T19:16:38.223Z","modified":"2026-10-26T13:10:00.14Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:21.244426Z"}],"osv":[{"id":"CVE-2026-44394","description":"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. 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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.","status":"published","published":"2026-05-28T19:16:38.223Z","modified":"2026-10-27T09:47:37.345510223Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"GHSA-whqr-fgm5-x77q","title":"OpenStack Keystone's federated token rescoping mechanism doesn't propagate the original token's expiry to the newly issued token","description":"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. 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