CVE-2026-89111 OAuth2 SSRF vulnerability in SAP Cloud SDK for Python
An attacker can exploit an SSRF flaw in the SAP Cloud SDK for Python to exfiltrate client credentials by manipulating tenant subdomains.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-89111?
CVE-2026-89111 is a critical server-side request forgery vulnerability in SAP_SE SAP Cloud, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-89111?
How do I fix CVE-2026-89111?
No fix has been published for CVE-2026-89111 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-89111 being exploited?
There is no known exploitation of CVE-2026-89111 in the wild and no public exploit code.
Sources
Also known as GHSA-4mv3-jxxm-9cx2, GHSA-m3j7-wp2j-mhc3.