CVE-2026-89111 — Vulnerability intelligence

SAP_SE — SAP Cloud

Published: 2026-10-13T00:24:28.269Z

CVSS

10

CISA KEV

Not listed; not proof of no exploitation

Original source text (not a translation)

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.

Sources

• CVE-2026-89111
• Original advisory
• Original advisory
• CVE-2026-89111