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CVE-2026-44394

Quick assessment

Affected
OpenStack Keystone
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenStack Keystone是OpenStack开源的一个核心认证组件库。 OpenStack Keystone 29.0.2之前版本存在安全漏洞，该漏洞源于联合令牌重新作用域机制未传播原始令牌的过期时间，可能导致用户通过反复重新作用域无限期维持访问权限。

CVSS 6.0 · Medium EPSS 0.32% · P24

Affected Version Matrix 3

VendorProduct Version RangeStatus
OpenStack Keystone 14.0.0< 27.0.2 affected
28.0.0< 28.0.2 affected
29.0.0< 29.0.2 affected
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I. Basic Information for CVE-2026-44394

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
OpenStack Keystone 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenStack Keystone是OpenStack开源的一个核心认证组件库。 OpenStack Keystone 29.0.2之前版本存在安全漏洞，该漏洞源于联合令牌重新作用域机制未传播原始令牌的过期时间，可能导致用户通过反复重新作用域无限期维持访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenStack Keystone 14.0.0 ~ 27.0.2 -

II. Public POCs for CVE-2026-44394

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III. Intelligence Information for CVE-2026-44394

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Vendor Advisories for CVE-2026-44394 (2)

Same Patch Batch · OpenStack · 2026-05-28 · 5 CVEs total

CVE-2026-42998 6.0 MEDIUM OpenStack Keystone 安全漏洞
CVE-2026-42999 6.0 MEDIUM OpenStack Keystone 安全漏洞
CVE-2026-43000 6.0 MEDIUM OpenStack Keystone 安全漏洞
CVE-2026-49299 OpenStack Neutron 安全漏洞

IV. Related Vulnerabilities

Same product: Keystone
Same vendor: OpenStack
Same weakness: CWE-863

V. Comments for CVE-2026-44394

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