# CVE-2026-23687: XML Signature Wrapping in SAP NetWeaver AS ABAP and ABAP Platform

> Authenticated attackers can bypass XML signature verification to access sensitive data and disrupt system operations in SAP NetWeaver AS ABAP.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Feb 2026
- **Updated:** 9 Jun 2026
- **Also known as:** GHSA-464m-h7w2-29w7

## What is CVE-2026-23687?

CVE-2026-23687 is a high-severity vulnerability in SAP_SE SAP NetWeaver AS ABAP and ABAP Platform, published on 10 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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, unauthorized access to sensitive user data and potential disruption of normal system usage.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature)

## Which versions are affected by CVE-2026-23687?

It affects 1 product.


Products: Sap Sap Basis.

## How do I fix CVE-2026-23687?

No fix has been published for CVE-2026-23687 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-23687 being exploited?

There is no known exploitation of CVE-2026-23687 in the wild and no public exploit code.

## Other vulnerabilities in SAP_SE SAP NetWeaver AS ABAP and ABAP Platform

- [CVE-2025-0066](https://insights.sbomify.com/CVE-2025-0066/): Information Disclosure vulnerability in SAP NetWeaver AS for ABAP and ABAP Platform (Internet Communication Framework) (critical 9.9)
- [CVE-2025-0063](https://insights.sbomify.com/CVE-2025-0063/): SQL Injection vulnerability in SAP NetWeaver AS for ABAP and ABAP Platform (high 8.8)
- [CVE-2026-0484](https://insights.sbomify.com/CVE-2026-0484/): Missing Authorization check in SAP NetWeaver Application Server ABAP and SAP S/4HANA (medium 6.5)
- [CVE-2025-0058](https://insights.sbomify.com/CVE-2025-0058/): Information Disclosure vulnerability in SAP Business Workflow and SAP Flexible Workflow (medium 6.5)
- [CVE-2024-34687](https://insights.sbomify.com/CVE-2024-34687/): Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application server for ABAP and ABAP Platform (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-23687 and fix it if it is affected.

What it is: CVE-2026-23687 is a high-severity vulnerability in SAP_SE SAP NetWeaver AS ABAP and ABAP Platform, published on 10 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-23687 in the wild and no public exploit code.

Affected product: SAP_SE SAP NetWeaver AS ABAP and ABAP Platform. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-23687/ (Markdown: https://insights.sbomify.com/CVE-2026-23687/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-23687
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-23687
- OSV: https://osv.dev/vulnerability/CVE-2026-23687

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-23687/
Summaries are generated and may contain mistakes; the official description above is the record.