Description
IBM WebSphere Application Server 9.0, and 8.5 is affected by an improper validation of user-supplied data during deserialization using the SAML Web Single Sign-On component. This could result in remote code execution via a crafted HTTP request when combined with a suitable gadget chain.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| IBM | WebSphere Application Server | 9.0 – ≤ 1.1.9.12, 8.5 | — |
Advisories 1
- WID-SEC-2026-1762 IBM WebSphere Application Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 24, 2026
References
- https://www.ibm.com/support/pages/node/7274733 vendor-advisory patch