CVE-2026-44394

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 v3 6.0 MEDIUM

6.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://bugs.launchpad.net/keystone/+bug/2150379	Exploit Issue Tracking Patch Third Party Advisory
https://security.openstack.org/ossa/OSSA-2026-015.html	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openstack:keystone::::::::
	cpe:2.3:a:openstack:keystone::::::::
	cpe:2.3:a:openstack:keystone::::::::

History

No history.

Information

Published : 2026-05-28 19:16

Updated : 2026-06-17 10:50

NVD link : CVE-2026-44394

Mitre link : CVE-2026-44394

CVE.ORG link : CVE-2026-44394

JSON object : View

Products Affected

openstack

keystone

CWE

CWE-863

Incorrect Authorization

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