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CVE-2026-27690

Critical

Description

Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.

SeverityCritical
CVSS9.1
Exploit probability—
ProductSap Approuter
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-444CWE-444

How to fix

Update
  • sap approuter20.10.0 or later
  • @sap/approuter20.10.0 or later

Affected products

ProductAffected versionsFixed in
sap approuterv < 20.10.020.10.0
@sap/approuternpmv < 20.10.020.10.0

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