Server-Side Request Forgery (SSRF) in IBM WebSphere Application Server Liberty - CVE-2026-1561
Published: April 2, 2026
Vulnerability identifier: #VU124833
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-1561
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: IBM Corporation
Affected software:
IBM WebSphere Application Server Liberty
IBM WebSphere Application Server Liberty
Detailed vulnerability description
The disclosed vulnerability allows a remote user to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input when the samlWeb-2.0 feature enabled. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
How to mitigate CVE-2026-1561
Install interim fix PH70017 and update to the latest version when available.