HTTP Request Smuggling Affecting @sap/approuter package, versions <20.10.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-SAPAPPROUTER-20158394
- published27 Sept 2026
- disclosed14 Jul 2026
- creditUnknown
Introduced: 14 Jul 2026
CVE-2026-27690 (opens in a new tab)How to fix?
Upgrade @sap/approuter to version 20.10.0 or higher.
Overview
@sap/approuter is a Node.js based application router
Affected versions of this package are vulnerable to HTTP Request Smuggling via the HTTP request handling process. An attacker can gain unauthorized access to sensitive information and disrupt service availability by sending specially crafted HTTP requests that cause request-response desynchronization.