CVE-2026-26137

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-26137
Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.

9.9 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope CHANGED

References
Link Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26137 Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:365_copilot_chat:-:*:*:*:*:*:*:*
History

27 Mar 2026, 23:17

Type Values Removed Values Added
Summary (en) Server-side request forgery (ssrf) in Microsoft 365 Copilot's Business Chat allows an authorized attacker to elevate privileges over a network. (en) Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.

24 Mar 2026, 17:18

Type Values Removed Values Added
CPE cpe:2.3:a:microsoft:365_copilot_chat:-:*:*:*:*:*:*:*
First Time Microsoft 365 Copilot Chat
Microsoft
References () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26137 - () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26137 - Vendor Advisory

23 Mar 2026, 17:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 8.9 		v2 : unknown
v3 : 9.9
Summary
  • (es) Falsificación de petición del lado del servidor (SSRF) en el Chat Empresarial de Microsoft 365 Copilot permite a un atacante autorizado elevar privilegios sobre una red.

19 Mar 2026, 21:17

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-19 21:17

Updated : 2026-03-27 23:17

NVD link : CVE-2026-26137

Mitre link : CVE-2026-26137

CVE.ORG link : CVE-2026-26137

JSON object : View

Products Affected

microsoft

  • 365_copilot_chat
CWE
CWE-918

Server-Side Request Forgery (SSRF)