CVE-2026-21520

Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector...

CVE-2026-21520

CVE-2026-21520 is a Copilot Studio information disclosure vulnerability with a network attack vector, allowing an unauthenticated attacker to view sensitive information. The NVD/MSRC entry attributes a CVSS v3.1 base score of 7.5 (HIGH) and confirms network access with no privileges. Red Hat and ...