CVE-2026-21520— Copilot Studio Information Disclosure Vulnerability
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I. Basic Information for CVE-2026-21520
Vulnerability Information
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Vulnerability Title
Copilot Studio Information Disclosure Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Copilot Studio 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Copilot Studio是美国微软（Microsoft）公司的一个人工智能聊天机器人。 Microsoft Copilot Studio存在安全漏洞，该漏洞源于对特殊元素的未正确中和。攻击者利用该漏洞可以通过网络攻击途径查看敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft Copilot Studio | - | - |
II. Public POCs for CVE-2026-21520
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Microsoft · 2026-01-22 · 8 CVEs total
| CVE-2026-24306 | 9.8 CRITICAL | Azure Front Door Elevation of Privilege Vulnerability |
| CVE-2026-21264 | 9.3 CRITICAL | Microsoft Account Spoofing Vulnerability |
| CVE-2026-24307 | 9.3 CRITICAL | M365 Copilot Information Disclosure Vulnerability |
| CVE-2026-24305 | 9.3 CRITICAL | Azure Entra ID Elevation of Privilege Vulnerability |
| CVE-2026-21227 | 8.2 HIGH | Azure Logic Apps Elevation of Privilege Vulnerability |
| CVE-2026-21521 | 7.4 HIGH | Word Copilot Information Disclosure Vulnerability |
| CVE-2026-21524 | 7.4 HIGH | Azure Data Explorer Information Disclosure Vulnerability |
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V. Comments for CVE-2026-21520
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