{"id":"CVE-2026-44394","published":"2026-05-28T00:00:00Z","modified":"2026-05-28T19:43:05Z","title":"An issue was discovered in OpenStack Keystone before 29.0.2","vendor":"OpenStack","product":"Keystone","tier":"tail","description":{"text":"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.","provenance":"source","from":"CVE.org"},"cvss":{"score":6,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00249,"percentile":0.16223,"provenance":"source"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"references":[{"url":"https://bugs.launchpad.net/keystone/+bug/2150379","tags":[]},{"url":"https://security.openstack.org/ossa/OSSA-2026-015.html","tags":[]}],"priority":{"score":7.4,"factors":[{"name":"EPSS percentile","points":3.24},{"name":"CVSS severity","points":4.2}]},"vendorSlug":"openstack","affectedVersions":[{"vendor":"OpenStack","product":"Keystone","versions":[">= 14.0.0, < 27.0.2",">= 28.0.0, < 28.0.2",">= 29.0.0, < 29.0.2"]}],"affected":[{"ecosystem":"PyPI","package":"keystone","vulnerableRanges":[">=14.0.0, <27.0.2",">=28.0.0, <28.0.2",">=29.0.0, <29.0.2"],"patched":["27.0.2","28.0.2","29.0.2"],"from":["GHSA-whqr-fgm5-x77q","PYSEC-2026-603"],"provenance":"source"}],"euvd":{"id":"EUVD-2026-33243","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-openstack-keystone-cve-2012-3426","parents":[{"from":"CVE-2012-3426","to":"CVE-2026-44394","relation":"variant","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"variant","quote":"This is a variant of CVE-2012-3426.","from":"CVE.org","in":"CVE-2026-44394"}]}]}}