Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N L N H H H 8.7 .0047 38.4 —
AFFECTED Product Versions Fixed IaaS API unspecified —
TIMELINE Apr 7 Reserved by VulnCheck Jun 8 Published (CNA: VulnCheck) Aug 24 RESCORED — CVE-2026-39910 (STACKIT IaaS API). CVSS 9.3 → 8.7 (NVD).
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.
| Date | Event | Detail |
|---|---|---|
| April 7, 2026 | Reserved | Reserved by VulnCheck |
| June 8, 2026 | Published | Published (CNA: VulnCheck) |
| August 24, 2026 | RESCORED | RESCORED — CVE-2026-39910 (STACKIT IaaS API). CVSS 9.3 → 8.7 (NVD). |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| STACKIT | IaaS API | — | — | — |
Authoritative record: CVE-2026-39910 at cve.org
Vendors: stackit
Weaknesses: CWE-862
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-39910 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
