---
title: "CVE-2026-89111: SAP Cloud SDK for Python - Server Side Request Forgery"
description: "SAP Cloud SDK for Python contains a server side request forgery caused by improper validation of tenant_subdomain parameter in OAuth2 token requests, letting attackers exfiltrate client credentials by redirecting requests to attacker-controlled servers, exploit requires control over tenant_subdomain parameter."
url: https://panop.io/threat-heartbeat/CVE-2026-89111/
---

# CVE-2026-89111 SAP Cloud SDK for Python - Server Side Request Forgery

SAP Cloud SDK for Python contains a server side request forgery caused by improper validation of tenant\_subdomain parameter in OAuth2 token requests, letting attackers exfiltrate client credentials by redirecting requests to attacker-controlled servers, exploit requires control over tenant\_subdomain parameter.

CVSS base score 10.0 /10

Critical

CISA KEV

Not listed

Public exploit

None known

EPSS

0.27% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89111)

## Details

Type

Server Side Request Forgery

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Update to the latest version with the vulnerability fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-89111](https://nvd.nist.gov/vuln/detail/CVE-2026-89111)
- [https://github.com/SAP/cloud-security-services-integration-library/security/advisories/GHSA-4mv3-jxxm-9cx2](https://github.com/SAP/cloud-security-services-integration-library/security/advisories/GHSA-4mv3-jxxm-9cx2)
- [https://url.sap/sapsecuritypatchday](https://url.sap/sapsecuritypatchday)
- [https://github.com/SAP/cloud-sdk-python/security/advisories/GHSA-4mv3-jxxm-9cx2](https://github.com/SAP/cloud-sdk-python/security/advisories/GHSA-4mv3-jxxm-9cx2)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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