1. Home
  2. CVE Database
  3. CVE-2026-66776
MEDIUM · 5.9

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 ...

Vulnerability Description

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 Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
SapApprouter< 23.0.0

Related Weaknesses (CWE)

CWE-347

References

FAQ

What is CVE-2026-66776?

CVE-2026-66776 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 ...

How severe is CVE-2026-66776?

CVE-2026-66776 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66776?

Check the references section above for vendor advisories and patch information. Affected products include: Sap Approuter.