This vulnerability (CVE-2026-26135) involves SSRF in the Azure Custom Locations Resource Provider, enabling an authorized attacker to perform unauthorized network requests that can elevate privileges. The CVSS 3.1 score of 9.6 reflects high impact on confidentiality and integrity with no user interaction required and low attack complexity. The affected product is a cloud service, and Microsoft manages remediation server-side with an official fix available as per the vendor advisory.

An authorized attacker exploiting this SSRF vulnerability can elevate privileges within the network, potentially accessing or modifying sensitive information, resulting in high confidentiality and integrity impact. Availability is not affected. The vulnerability affects a cloud-hosted service, which increases the risk scope if exploited.

Microsoft has released an official fix for this vulnerability and manages remediation for the Azure Custom Locations Resource Provider as a cloud service. Users should ensure their Azure environment is updated according to Microsoft's guidance at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26135. No additional mitigation actions are required beyond applying the official fix.