CVE-2026-66776

SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under specific conditions. An attacker with low privileges could send a specially crafted request that bypasses the integrity check and loads another user's session context. Successful exploitation requires the attacker to have previously observed matching session values out-of-band, which makes the attack complex to execute. This could result in a high impact on confidentiality and a low impact on integrity. There is no impact on availability.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://me.sap.com/notes/3786038	Permissions Required
https://url.sap/sapsecuritypatchday	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:sap:approuter:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-08-11 01:17

Updated : 2026-09-08 20:21

NVD link : CVE-2026-66776

Mitre link : CVE-2026-66776

CVE.ORG link : CVE-2026-66776

JSON object : View

Products Affected

sap

approuter

CWE

CWE-347

Improper Verification of Cryptographic Signature

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