{"schemaVersion":3,"id":"CVE-2026-44394","aliases":["GHSA-whqr-fgm5-x77q","PYSEC-2026-603","UBUNTU-CVE-2026-44394","DEBIAN-CVE-2026-44394","CGA-29rf-h7f7-jj25","CGA-2cwr-m63p-h327","CGA-3595-xmrm-gmp5","CGA-3p37-g8vc-gqwf","CGA-8hw4-m275-vr94","CGA-8vhp-3968-23vw","CGA-g9qp-8f5r-5x4j","CGA-hj9x-m9f2-7fm8","CGA-j7v6-h97x-cqpp","CGA-p6gc-m64g-pf6q","CGA-x9hv-5ch6-5295","CGA-xhpf-c877-63wr"],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-05-28T00:00:00.000Z","modified":"2026-05-28T19:43:05.616Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.1,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Pypi","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","exploitability":7.2,"impact":8.7,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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