8.1

CVE-2026-44394

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Openstack ≫ Keystone Version >= 14.0.0 < 27.0.2
Openstack ≫ Keystone Version >= 28.0.0 < 28.0.2
Openstack ≫ Keystone Version >= 29.0.0 < 29.0.2
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.159
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.1 2.8 5.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
cve@mitre.org 6 1.8 3.7
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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