CVE-2026-27690: SAP Approuter Vulnerable to HTTP Request Smuggling
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.
Published Jul 14, 2026 · Updated Sep 1, 2026
Affected packages
@sap/approuter
- Ecosystem
- npm
- Affected
- < 20.10.0
- Fixed in
- 20.10.0
- Check
npm ls @sap/approuter
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
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.
Credited to henrybrink.
References
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology