Vulnerability · Published Jan 22, 2026 · Assigned by microsoft
CVE-2026-21520Copilot Studio Information Disclosure Vulnerability
High 7.5
In plain English
A high-severity command injection in Microsoft Copilot Studio from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.5%top 25.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 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/E:U/RL:O/RC:C/CR:H/IR:L/AR:L
References
- Copilot Studio Information Disclosure Vulnerability vendor-advisory, patch