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. 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.

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Produits concernés

• OpenStack Keystone

Scores CVSS

Faiblesses (CWE)

• CWE-863

Références

• https://bugs.launchpad.net/keystone/+bug/2150379 ExploitIssue TrackingPatchThird Party Advisory
• https://security.openstack.org/ossa/OSSA-2026-015.html PatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories