CVE-2026-44394

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

28/05/2026

Last modified:

02/06/2026

Description

An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone federated token rescoping mechanism does not propagate the original token&#39;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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L CVSS v3.1 Severity and Metrics:

Base Score: 6.00 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): Low
Availability (A): Low

Base Score 3.x

6.00

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:openstack:keystone::::::::	14.0.0 (including)	27.0.2 (excluding)
cpe:2.3:a:openstack:keystone::::::::	28.0.0 (including)	28.0.2 (excluding)
cpe:2.3:a:openstack:keystone::::::::	29.0.0 (including)	29.0.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-44394

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools