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CVE-2026-39910

STACKIT IaaS API Privilege Escalation via Service Account Attachment PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
STACKIT / IaaS APIaffected 0 before 2026-05-28

CWE

CWE-862

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.