CVE-2026-89111: OAuth2 SSRF vulnerability in SAP Cloud SDK for Python
- Is it exploited?
Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.
- How likely is exploitation in the next 30 days?
- 0.4%
Up from 0.3% on .
EPSS score, percentile 31.1 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 10.0 Critical
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- sap-cloud-sdk < 0.45.2
Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | sap-cloud-sdk < 0.45.2 |
Versions not listed are: unaffected.
Source: CVE List, as of . About the data.
About this vulnerability
The SAP Cloud SDK for Python contains an OAuth2 SSRF vulnerability affecting multi-tenant BTP applications. An attacker who controls the tenant_subdomain parameter can redirect OAuth2 token requests to an attacker-controlled server, causing client credentials to be exfiltrated.
Summary: CVE record, as of .
- CISA has not added CVE-2026-89111 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
- The CVE record was published on 13 Oct 2026.
- The CVE record carries a CVSS v3.1 base score of 10.0 (Critical), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.4% (percentile 31.1), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
- CISA's SSVC assessment in the CVE record: exploitation none, automatable yes, technical impact total.
Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.
Description
OAuth2 SSRF vulnerability in SAP Cloud SDK for Python
The SAP Cloud SDK for Python contains an OAuth2 SSRF vulnerability affecting multi-tenant BTP applications. An attacker who controls the tenant_subdomain parameter can redirect OAuth2 token requests to an attacker-controlled server, causing client credentials to be exfiltrated.
Source: CVE List, as of . About the data.
Weakness
CWE-918
- CWE-918: Server-Side Request Forgery
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
2
Known exploited SAP vulnerabilities
- CVE-2025-42999: SAP NetWeaver Deserialization Vulnerability
- CVE-2025-31324: SAP NetWeaver Unrestricted File Upload Vulnerability
- CVE-2017-12637: SAP NetWeaver Directory Traversal Vulnerability
- CVE-2019-0344: SAP Commerce Cloud Deserialization of Untrusted Data Vulnerability
- CVE-2022-22536: SAP Multiple Products HTTP Request Smuggling Vulnerability