CVE-2026-87701 CRITICAL

CVE-2026-87701: Azure Cosmos DB Elevation of Privilege Vulnerability

Vendor Microsoft

Product Azure Cosmos DB

Weakness CWE-74

Published September 17, 2026

Last update September 19, 2026

View on NVD All CVEs

CVSS base score

9.6/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C

What the vulnerability does

01Description

Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.

Key dates

02Disclosure timeline

September 17, 2026 CVE published

September 19, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-87701 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/74.html AskarLabs — CWE-74 write-up Improper Neutralization of Special Elements in Output ('Injection')

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