High severity8.8NVD Advisory· Published Jun 19, 2026· Updated Jun 26, 2026
CVE-2026-47645
CVE-2026-47645
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.
Affected products
2cpe:2.3:a:microsoft:365_copilot:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:microsoft:365_copilot:-:*:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47645nvdVendor Advisory
News mentions
1- Microsoft Cloud Batch: 13 CVEs Across Copilot, Azure, Exchange, and Developer ToolsVypr Intelligence · Jun 19, 2026