Hot Note
Affected system
Java
CVSS
9.0
Component
BC-JAS-WEB
Patch Day
2026-06
Released on
2026/06/09
SAP Note
3727078
Workaround
No
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Related advisories
3.5
[CVE-2023-49058] Directory Traversal vulnerability in SAP Master Data Governance
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Advisory

A note with CVSS 9.0 for component BC-JAS-WEB was released by SAP on 09.06.2026. The correction/advisory 3727078 was described with "3727078 - [CVE-2026-40128] Directory Traversal vulnerability in SAP NetWeaver Application Server Java (Web Container)" and affects the system type Java.

A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process.

The vulnerability addressed is directory traversal (read/write) within Java.

Risk specification

SAP NetWeaver Application Server Java (Web Container) allows an unauthenticated attacker to send a specially crafted HTTP logon request that manipulates file inclusion parameters, enabling path traversal and resulting in unauthorized access to or modification of sensitive system data, or service disruption.

Solution

The Web Container has been updated to properly prevent path traversal outside the intended context.

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 advisory is valid for

 

Related advisories
3.5
[CVE-2023-49058] Directory Traversal vulnerability in SAP Master Data Governance
Back Download to PDF
 

Disclaimer

SecurityBridge takes the security of SAP products very seriously. We very much encourage the responsible disclosure of security vulnerabilities. If you have detected a vulnerability concerning one of the SAP software products – either in the latest or in a former product version follow the guidelines and processes in accordance with the SAP portal page “Report a Security Vulnerability to SAP”.

The advisories found within the SecurityBridge advisory are generated and continuously enriched by our Team at SecurityBridge and affiliated security consultants, partners, customers of the SecurityBridge Platform, SAP support, and advisory groups.

We do not disclose zero-day vulnerabilities unless a security patch has been made available to the public. In such case, the platform only provides details on which version or signature updates are available within the SecurityBridge platform in order to monitor or measure the vulnerability.

In accordance with SAP guidelines, SecurityBridge only discloses issues where the fixing security note has been released. The vulnerability platform makes no references to available exploits or Proof of Concepts (PoC). Advisories and vulnerabilities will always mention the fixing security note or hints to the corresponding SAP documentation.

Cross-Site Scripting

Protecting your SAP© systems against exploitation of directory traversal vulnerabilities is almost impossible without usage of an appropriate cybersecurity software.

Custom coding may be introduced at any moment. According to statistic, at least one vulnerability exists in a set of 1.000 source code lines. In consequence continuous code vulnerability assements are needed to protect your assets.

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