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CVE-2026-43001

Published: May 1, 2026Updated: Jun 30, 2026 Sources: CVE List NVDCWE-863
7.9HIGH
NVD MITRE
EPSS Score
0.4%
Top 64.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:CC:HI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-863CWE-1288

Affected Products

OpenStack
oss-project·USaka openstack foundation
KeystoneSaaSWeb App
Cloud & SaaS / cloud-platform
and 1 more affected products View all →

Exploitability

Official Patch Available
Scannable·OpenVAS
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://bugs.launchpad.net/keystone/+bug/2149775
bugs.launchpad.net
https://review.opendev.org/c/openstack/keystone/+/985804
review.opendev.org
https://security.openstack.org/ossa/OSSA-2026-015.html
security.openstack.org
and 3 more references View all →
News mentions
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