CVE-2026-39910 (GCVE-0-2026-39910)

Vulnerability from cvelistv5 – Published: 2026-06-08 16:16 – Updated: 2026-08-24 10:28 Exclusively Hosted Service
VLAI
Title
STACKIT IaaS API Privilege Escalation via Service Account Attachment
Summary
STACKIT IaaS API contains a missing authorization check vulnerability that allows authenticated, low-privileged attackers to escalate privileges to full organization compromise by attaching arbitrary service accounts to virtual machines they control. Attackers can exploit the unvalidated PUT servers service-accounts endpoint to attach high-privileged service accounts and query the Instance Metadata Service to retrieve OAuth2 tokens, bypassing tenant boundaries and gaining unauthorized control over the entire organization environment.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 15:41 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
STACKIT IaaS API Affected: 0 , < 2026-05-28 (custom)
Create a notification for this product.
Date Public
2026-05-28 00:00
Credits
Lior Fatiha
Show details on NVD website
To clipboard 

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