CVE-2026-47645
High
Description
Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Microsoft 365 Copilot
PublishedJun 19, 2026
First seenJun 19, 2026
Weakness typeCWE-601Open redirect
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft 365_copilot | No range specified | — |
Check your version
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