EUVD-2026-70796
GHSA-7h72-qvqq-9276
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible cloud service, low-privilege account required (PR:L); no user interaction; full data access/modification impact consistent with cross-account IDOR; A:H accepted as vendor-stated worst-case but may be overstated for a spoofing scenario.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
Authorization bypass through user-controlled key in Azure Cosmos DB allows an authorized attacker to perform spoofing over a network.
AnalysisAI
Authorization bypass via user-controlled key in Azure Cosmos DB enables an authenticated attacker to perform cross-account spoofing over the network, potentially accessing or manipulating data belonging to other accounts or tenants. Exploiting CWE-639 (IDOR-class flaw), an attacker with a valid Cosmos DB account can supply a crafted key to circumvent per-resource authorization checks, yielding full confidentiality, integrity, and availability impact per the CVSS vector. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid, authenticated Azure Cosmos DB account with at least low-privilege access (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 (High) with a full-triad C:H/I:H/A:H impact places this at the upper bound of high-severity findings, yet several signals temper the urgency. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch available per vendor advisory - as Azure Cosmos DB is a fully managed cloud service, Microsoft applies server-side fixes without requiring customer-initiated upgrades; customers do not need to install a new version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all Azure Cosmos DB account keys and access logs for cross-account activity or anomalous authorization attempts; document current configurations and review access patterns. …
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External POC / Exploit Code
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