{"cve":"CVE-2026-44394","nvd":{"published":"2026-05-28T19:16:38.223","modified":"2026-10-26T13:10:00.140","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-863"],"references":["https://bugs.launchpad.net/keystone/+bug/2150379","https://security.openstack.org/ossa/OSSA-2026-015.html"],"products":["openstack:keystone"],"source":"nvd","synced_at":"2026-10-26T13:39:24.642594360+00:00"},"epss":{"cve":"CVE-2026-44394","score":0.00249,"percentile":0.16088,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-whqr-fgm5-x77q","url":"https://osv.dev/vulnerability/GHSA-whqr-fgm5-x77q","summary":"OpenStack Keystone's federated token rescoping mechanism doesn't propagate the original token's expiry to the newly issued token","modified":"2026-09-10T03:50:47.930367522Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=14.0.0 <27.0.2"],"fixed":["27.0.2"]},{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=28.0.0 <28.0.2"],"fixed":["28.0.2"]},{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=29.0.0 <29.0.2"],"fixed":["29.0.2"]}]},{"id":"PYSEC-2026-603","url":"https://osv.dev/vulnerability/PYSEC-2026-603","summary":"","modified":"2026-07-13T16:45:08.026088467Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=14.0.0 <27.0.2",">=28.0.0 <28.0.2",">=29.0.0 <29.0.2"],"fixed":["27.0.2","28.0.2","29.0.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}