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CVE-2026-42998

CVSS 6.0 · Medium EPSS 0.06% · P18

Affected Version Matrix 3

VendorProductVersion RangeStatus
OpenStackKeystone14.0.0< 27.0.2affected
28.0.0< 28.0.2affected
29.0.0< 29.0.2affected
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I. Basic Information for CVE-2026-42998

Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone application credential authentication plugin does not verify that the user supplied in the authentication request matches the owner of the application credential. An attacker can authenticate with their own application credential ID and secret while specifying a different user's name and domain in the request body. Keystone issues a token attributed to the victim user. The impersonated token is project-scoped and carries the intersection of the application credential's roles and the victim's actual roles on the project. This enables audit evasion, reading the victim's credentials, and acting as the victim within shared projects.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
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，该漏洞源于应用凭证认证插件未验证用户身份，可能导致攻击者使用自己的应用凭证ID和密钥冒充其他用户获取令牌。
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

VendorProductAffected VersionsCPESubscribe
OpenStackKeystone 14.0.0 ~ 27.0.2 -

II. Public POCs for CVE-2026-42998

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III. Intelligence Information for CVE-2026-42998

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Vendor Advisories for CVE-2026-42998 (1)

Other References for CVE-2026-42998 (1)

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

CVE-2026-429996.0 MEDIUMOpenStack Keystone 安全漏洞
CVE-2026-430006.0 MEDIUMOpenStack Keystone 安全漏洞
CVE-2026-443946.0 MEDIUMOpenStack Keystone 安全漏洞
CVE-2026-49299OpenStack Neutron 安全漏洞

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-42998

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