DEBIAN-CVE-2026-43001

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2026-43001
Published: 01 May 2026, 09:16
Last modified:15 Jun 2026, 19:06

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
8 HIGH
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 May 2026, 09:16
Published
Vulnerability first disclosed
15 Jun 2026, 19:06
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected Systems

  • debian•keystone

    all | all | all | all | < 2:18.1.0-1+deb11u3 | < 2:22.0.2-0+deb12u3 | < 2:27.0.0-3+deb13u4 | < 2:29.0.1-2

References (1)