CVE-2026-33102

Published Apr 23, 2026

Last updated 2 days ago

Overview

Description
Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.
Source
secure@microsoft.com
NVD status
Analyzed
CNA Tags
exclusively-hosted-service
Products
365_copilot

Risk scores

CVSS 3.1

Type
Primary
Base score
9.3
Impact score
5.8
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Severity
CRITICAL

Weaknesses

secure@microsoft.com
CWE-601

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.