Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-69857

CVE-2026-69857HIGH

Microsoft Azure Cosmos DB — Azure Cosmos DB Spoofing Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  U  H  H  H    8.8   .0063   48.5     —

AFFECTED
  Product          Versions  Fixed
  Azure Cosmos DB  - –       —

TIMELINE
  Aug 3   Reserved by microsoft
  Sep 3   Published (CNA: microsoft)
  Sep 9   RESCORED — CVE-2026-69857 (Microsoft Azure Cosmos DB). CVSS 8.5 → 8.8 (NVD).

CWE-639 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

Authorization bypass through user-controlled key in Azure Cosmos DB allows an authorized attacker to perform spoofing over a network.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 3, 2026	Reserved	Reserved by microsoft
September 3, 2026	Published	Published (CNA: microsoft)
September 9, 2026	RESCORED	RESCORED — CVE-2026-69857 (Microsoft Azure Cosmos DB). CVSS 8.5 → 8.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Azure Cosmos DB	—	-	—

Weaknesses

CWE-639

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69857 [vendor-advisory, patch]

Authoritative record: CVE-2026-69857 at cve.org

Vendors: microsoft

Weaknesses: CWE-639

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-69857 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.