HarborGuard / CVE
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HIGHCVE-2026-26129Published Modified CNA microsoft

CVE-2026-26129: M365 Copilot Information Disclosure Vulnerability

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

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
Affected Products
1
Affected packages
  • Microsoft / Microsoft 365 Copilot's Business Chat
    -
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C