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HIGHCVE-2026-21520Published Modified CNA microsoft

CVE-2026-21520: Copilot Studio Information Disclosure Vulnerability

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

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
Affected Products
1
Affected packages
  • Microsoft / Microsoft Copilot Studio
    -
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C/CR:H/IR:L/AR:L
CVE-2026-21520: Copilot Studio Information Disclosure Vulnerability | HarborGuard CVE