CVE-2026-26137

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CVSS 3.1

9.9 critical

EPSS

<1%p44

Published

Mar 19, 2026 (Mar 19, 2026)

Modified

Jun 17, 2026

Description

Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.

Vendors: microsoft
Products: 365 copilot chat
Weakness: CWE-918
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

NVD CVE.org GitHub PoCs EPSS (0.5%)

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