CVE-2026-26129

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N                                    

Improper neutralization of special elements in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Published Date

May 07, 2026

Last Modified

May 08, 2026

CWE ID

CWE-138

Source

NVD

Vendor

microsoft

Product

365_copilot_chat