Advisory
On 10.02.2026 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within Java.
SAP Note 3673213 addresses "[CVE-2026-23686] CRLF Injection vulnerability in SAP NetWeaver Application Server Java" to prevent carriage return / line feed (crlf) injection with a low risk for exploitation.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance, the team suggests.
Risk specification
SAP NetWeaver Application Server Java allows an authenticated attacker with administrative privileges to inject untrusted entries into generated configurations by submitting specially crafted content to the application, potentially resulting in manipulation of application-controlled settings.
Solution
The issue has been resolved by removing the vulnerable URL generation tool.
Affected System
SAP Netweaver Application Server Java is part of the SAP NetWeaver Application Platform. It provides the complete infrastructure for deploying and running Java applications.
- The AS Java Home: SAP Netweaver Application Server Java wiki
- A dedicated SAP NetWeaver 7.40 Application Server for Java Security Guide exists.
The advisory is valid for
