CVE-2026-39910Patch

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-862

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-06-08); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-06-08: 1Mentions · 2026-06-13: 1Patch / Workaround · 2026-06-08: 1Technical Details · 2026-06-08: 1Technical Details · 2026-06-13: 106-0806-13
Signal classification2 categories
Patch
150.0%
Disclosure
150.0%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-06-081
Patch1
2026-06-131
Disclosure1
Full discourse2 posts
  • Orizon@OrizonCyber
    Patch

    🚨 CVE-2026-39910 — CVSS 9.8/10 ██████████ STACKIT IaaS API contains a missing authorization check vulnerability that allows authenticated, low-privileged... Severity: CRITICAL Patch now. #cybersecurity #CVE https://t.co/OxO9b9INH9

    Post summary

    The tweet highlights a critical missing authorization check vulnerability with a CVSS score of 9.8/10 and urges patching, but provides no PoC, exploit code, or evidence of active exploitation.

    1000099
    59 followersView on X
  • SecAlerts@SecAlertsCo
    Disclosure

    ☁️ CVE-2026-39910: STACKIT IaaS API's missing authorization check lets any low-privileged authenticated attacker escalate to full org compromise via service account attachment. Critical 9.3 CVSS. Check your exposure now. #CloudSecurity #PrivEsc https://secalerts.co/vulnerability/CVE-2026-39910 https://t.co/0aFErdx1Ts

    Post summary

    The post announces CVE-2026-39910—a critical failure in STACKIT’s IaaS API that allows low‑privileged attackers to fully compromise an organization via service account attachment, urging readers to check their exposure.

    0000067
    835 followersView on X

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