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Microsoft Security Response CenterCVE-2026-49159

Microsoft Graph Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Microsoft Graph allows an authorized attacker to disclose information over a network.

Read the vendor bulletin Get alerts for Microsoft Graph
6.5CVSS out of 10Critical severity
Scope

What the vendor says is affected

  • Microsoft Graph
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-49159View CVSS, KEV, EPSS, and threat context
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