CVE-2026-44394 (GCVE-0-2026-44394)

Vulnerability from cvelistv5 – Published: 2026-05-28 00:00 – Updated: 2026-05-28 19:43
VLAI
Summary
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
6 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:42 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2159 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
OpenStack Keystone Affected: 14.0.0 , < 27.0.2 (semver)
Affected: 28.0.0 , < 28.0.2 (semver)
Affected: 29.0.0 , < 29.0.2 (semver)
    cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
    cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
    cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
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