CVE-2026-21520

—

CVSS 3.1

7.5 high

EPSS

1%p71

Published

Jan 22, 2026 (Jan 22, 2026)

Modified

Jun 17, 2026

Description

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

Vendors: microsoft
Products: copilot studio
Weakness: CWE-77
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (1.4%)

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