Vulnerability details
CVE-2026-89111
SAP_SE SAP Cloud
OAuth2 SSRF vulnerability in SAP Cloud SDK for Python
CVSS 3.1
10.0Critical
Official description
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. This vulnerability was originally fixed in 0.45.2. It was reintroduced in 0.53.0 when the HTTP client was refactored into a shared core module, and the tenant subdomain validation was not carried over to the new location. The validation was restored in 0.55.1.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 10.0Critical | 3.1 | CVEProject cvelistV5 (CNA) (sap) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| SAP_SE | SAP Cloud | sap-cloud-sdk < 0.45.2 | CVEProject cvelistV5 (CNA) |
| SAP_SE | SAP Cloud | >=0.53.0 ≤ v < 0.55.1 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-10-13
- Last updated
- 2026-11-03
- State
- Published
- Assigner (CNA)
- sap
Exploit prediction (EPSS)
0.37%
Probability of exploitation in 30 days
31.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-918Server-Side Request Forgery