CVE-2026-33102: Open redirect in Microsoft 365 Copilot enables privilege elevation
A URL redirection to untrusted site ('open redirect') vulnerability in Microsoft 365 Copilot allows an unauthorized attacker to elevate privileges over a network. The issue is tracked as CVE-2026-33102 and documented in Microsoft's MSRC update guide.
Disclosed 23 April 2026 · Record updated 13 September 2026
Impact
An unauthorized remote attacker could elevate privileges via an open redirect in M365 Copilot.
Our coverage
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Sources
- nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-33102
