Advisory

A note with CVSS 6.1 for component SV-SMG-TWB-CBT was released by SAP on 10.02.2026. The correction/advisory 3688319 was described with "[CVE-2026-24328] Open Redirection vulnerability in Business Server Pages Application (TAF_APPLAUNCHER)" and affects the system type ABAP.

A workaround exists, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process.

The vulnerability addressed is open redirect within ABAP.

Missing authority checks are still the most common security defect related to authorizations in custom code. Since SAP uses an explicit authorization model, an authority checks must be coded in order to be executed. If an explicit check is not coded, all users have access. This type of vulnerability not only exists in SAP standard it also exists in customer coding. Check your custom developments for vulnerabilities that pose a risk to your systems. SecurityBridge helps detect code vulnerabilities before they are implemented in production.

Risk specification

SAP TAF_APPLAUNCHER allows an unauthenticated attacker to craft links that redirect victims to attacker-controlled sites, potentially misleading users into opening unsafe external content.

Solution

The application now displays a clear warning before redirecting to external URLs, ensuring that users are fully informed before navigating away from trusted pages. Although an alternative solution exists, it is advisable to apply the correction! This is the workaround, which was suggested by the SAP security experts: "As a workaround you can deactivate the BSP TAF_APPLAUNCHER application if CBTA is not being used.".

Affected System

The advisory 3688319 describes a problem within an ABAP based systems of a specific version. Affected versions are described below. ABAP software is deployed in various software components and is widely used within the SAP product portfolio.

SAP NetWeaver Application Server (formally known as SAP Web Application Server) is a building block of SAP NetWeaver. It is the foundation for most software products developed by SAP SE. SAP NetWeaver systems exist with Java and/or ABAP stacks. The advisory could be relevant for single and dual-stack ABAP installations.

The advisory is valid for

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Advisory

Risk specification

Solution

Affected System

Disclaimer