# CVE-2026-87701: Microsoft Azure Cosmos DB injection privilege escalation

Source: https://junglewise.ai/threats/cve-2026-87701-microsoft-azure-cosmos-db-injection-privilege-escalation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-17. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-87701 · Severity: critical · CVSS 9.6 · Published 2026-09-17

Azure Cosmos DB is a managed database service used by enterprises to store and query application data. An authorized attacker can exploit an injection vulnerability to escalate their privileges and gain unauthorized access to data or administrative functions, potentially compromising the confidentiality and integrity of customer information and operations.

Technologies: [Microsoft Azure Cosmos DB](https://junglewise.ai/threats/technologies/azure-cosmos-db). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-87701 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-87701 being exploited in the wild.

**How severe is CVE-2026-87701?** Critical severity, with a CVSS score of 9.6, published 17 September 2026.

**Which products and versions are affected?** Microsoft Azure Cosmos DB.

**Is there a fix for CVE-2026-87701?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-87701 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-87701?** Check whether you run Microsoft Azure Cosmos DB. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability is an improper neutralization of special elements in output (injection) vulnerability in Azure Cosmos DB. An authorized attacker can exploit the flaw over the network to elevate their privileges. The root cause involves insufficient input validation or sanitization of special characters in output used by a downstream component, allowing an attacker to inject malicious commands or queries. The attack requires prior authentication to the service. Exploitation can result in privilege escalation, potentially allowing an attacker to perform unauthorized administrative operations. Microsoft has released security updates to address this issue.

## Affected products

- Microsoft Azure Cosmos DB

## Timeline

- 2026-09-17: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87701](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-87701)

## Related threats

- [Microsoft Azure Cosmos DB authorization bypass through user-controlled key](https://junglewise.ai/threats/cve-2026-69857-microsoft-azure-cosmos-db-authorization-bypass-through-user)
- [Microsoft Azure Cosmos DB improper access control remote code execution](https://junglewise.ai/threats/cve-2026-66803-microsoft-azure-cosmos-db-improper-access-control-remote-code)
- [Microsoft Azure Cosmos DB improper access control remote code execution](https://junglewise.ai/threats/cve-2026-24304-microsoft-azure-cosmos-db-improper-access-control-remote-code)