# CVE-2026-66761: Multiple vulnerabilities in SAP Business AI Platform (Approuter)

> Low-privilege attackers can cause unbounded memory growth and availability impact by sending high volumes of data to SAP Approuter.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L`)
- **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:** 11 Aug 2026
- **Updated:** 11 Aug 2026
- **Also known as:** GHSA-j28w-983h-rg43

## What is CVE-2026-66761?

CVE-2026-66761 is a medium-severity denial of service vulnerability in SAP_SE SAP Business AI Platform (Approuter), published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

SAP Approuter does not enforce sufficient flow control in certain functionality. An attacker with low privileges could send high volumes of data without consuming responses, causing unbounded memory growth. This results in a low impact on availability. There is no impact on confidentiality and integrity.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2026-66761?

It affects 1 product.


Products: Sap Approuter.

## How do I fix CVE-2026-66761?

No fix has been published for CVE-2026-66761 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-66761 being exploited?

There is no known exploitation of CVE-2026-66761 in the wild and no public exploit code.

## Other vulnerabilities in SAP_SE SAP Business AI Platform (Approuter)

- [CVE-2026-27690](https://insights.sbomify.com/CVE-2026-27690/): HTTP Request Smuggling in SAP Approuter (critical 9.1)
- [CVE-2026-44745](https://insights.sbomify.com/CVE-2026-44745/): Open Redirect vulnerability in SAP Approuter (high 8.1)
- [CVE-2026-58230](https://insights.sbomify.com/CVE-2026-58230/): Multiple vulnerabilities in SAP Business AI Platform (Approuter) (high 7.0)
- [CVE-2026-66760](https://insights.sbomify.com/CVE-2026-66760/): Multiple vulnerabilities in SAP Business AI Platform (Approuter) (medium 6.4)
- [CVE-2026-58237](https://insights.sbomify.com/CVE-2026-58237/): Multiple vulnerabilities in SAP Business AI Platform (Approuter) (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-66761 and fix it if it is affected.

What it is: CVE-2026-66761 is a medium-severity denial of service vulnerability in SAP_SE SAP Business AI Platform (Approuter), published on 11 Aug 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-2026-66761 in the wild and no public exploit code.

Affected product: SAP_SE SAP Business AI Platform (Approuter). 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-2026-66761/ (Markdown: https://insights.sbomify.com/CVE-2026-66761/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-66761
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-66761
- OSV: https://osv.dev/vulnerability/CVE-2026-66761

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-66761/
Summaries are generated and may contain mistakes; the official description above is the record.