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CVE-2026-43001

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 13版本至29版本存在安全漏洞，该漏洞源于POST /v3/credentials未验证调用者提供的project_id，可能导致跨项目横向移动。

CVSS 7.9 · High EPSS 0.59% · P47

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-2026-43001

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. POST /v3/credentials did not validate that the caller-supplied project_id for an EC2-type credential matched the project of the authenticating application credential. This allowed an attacker holding an unrestricted application credential for project A to create an EC2 credential targeting project B; a subsequent /v3/ec2tokens exchange would then issue a Keystone token scoped to project B while still carrying the original app_cred_id, enabling cross-project lateral movement within the credential owner's role footprint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/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 13版本至29版本存在安全漏洞，该漏洞源于POST /v3/credentials未验证调用者提供的project_id，可能导致跨项目横向移动。
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-2026-43001

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III. Intelligence Information for CVE-2026-43001

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Patches & Fixes for CVE-2026-43001 (1)

Vendor Advisories for CVE-2026-43001 (1)

Other References for CVE-2026-43001 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-43001

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