CVE-2026-39910
Last modified
CVE-2026-39910 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-39910?
How severe is CVE-2026-39910?
How do I fix CVE-2026-39910?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-39903Simple Machines Forum 2.1 prior to commit 7d048f8 and 3.0 pr…7.1
- CVE-2026-39904Gophish through 0.12.1 contains a denial of service vulnerab…7.1
- CVE-2026-39906Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.…10
- CVE-2026-39907Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.…10
- CVE-2026-39908OpenBullet2 through version 0.3.2 on Windows contains a cred…7.1
- CVE-2026-3991Symantec Data Loss Prevention Windows Endpoint, prior to 25.…7.8
- CVE-2026-39911Hashgraph Guardian through version 3.5.1, fixed in commit 45…8.8
- CVE-2026-39912V2Board 1.6.1 through 1.7.4 and Xboard through 0.1.9 expose …9.1
- CVE-2026-39918Vvveb prior to 1.0.8.1 contains a code injection vulnerabili…9.8
- CVE-2026-3992A weakness has been identified in CodeGenieApp serverless-ex…6.3
- CVE-2026-39920BridgeHead FileStore versions prior to 24A (released in earl…9.8
- CVE-2026-39921GeoNode versions 4.0 before 4.4.5 and 5.0 before 5.0.2 conta…6.3
Are you affected by CVE-2026-39910?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST