Executive Summary

A critical server-side request forgery (SSRF) vulnerability, CVE-2026-57106, has been identified in Microsoft Purview Data Governance. This vulnerability, with a CVSS score of 10, allows an unauthorized attacker to elevate privileges over a network. All users of Microsoft Purview Data Governance are affected and should take immediate action to mitigate this critical vulnerability.

Technical Analysis

The vulnerability is classified as a server-side request forgery (SSRF) issue in the Data Quality component of Microsoft Purview Data Governance. The attack vector is over the network (AV:N), and the vulnerability can be exploited with low attack complexity (AC:L) without requiring any privileges (PR:N) or user interaction (UI:N). The scope of the vulnerability is changed (S:C), and it impacts confidentiality (C:H), integrity (I:H), and availability (A:H). The root cause of this vulnerability is the lack of proper validation of input requests, allowing an attacker to forge requests to internal or external services.

How It Gets Exploited

An unauthenticated remote attacker on the same network can exploit this vulnerability by sending a crafted request to the Microsoft Purview Data Governance service. Specifically, the attacker would send a malicious request that triggers the SSRF vulnerability, allowing the attacker to make unauthorized requests to internal services. This could lead to privilege escalation, as the attacker could use the vulnerable service to access or manipulate sensitive data. For example, an attacker might send a request to the vulnerable service with a manipulated URL, causing the service to make an unintended request to an internal server or external service. This could result in the attacker gaining access to sensitive information or disrupting service operations.

Impact Assessment

Microsoft Purview Data Governance is affected by this vulnerability. An attacker exploiting this vulnerability could achieve privilege escalation, potentially leading to unauthorized access to sensitive data or disruption of service operations. The CVSS score of 10 indicates a critical severity level, and immediate action is required to mitigate this vulnerability.

Recommended Actions

To mitigate this vulnerability, update Microsoft Purview Data Governance to the latest version as recommended by Microsoft. Additionally, implement network segmentation and access controls to limit the attack surface. Monitor for suspicious activity and implement a web application firewall (WAF) to detect and prevent SSRF attacks. Specifically, block any requests to the vulnerable service that originate from untrusted sources or contain suspicious patterns.

Sources

  • National Vulnerability Database (NVD)
  • Microsoft Security Response Center (MSRC)