CVE-2026-1561: IBM WebSphere Application Server

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.3 IBM WebSphere Application Server Liberty is vulnerable to server-side request forgery (SSRF). This may allow remote attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

Affected products

• IBM WebSphere Application Server: from 17.0.0.3, before 26.0.0.4 (fixed in 26.0.0.4)

Published 2026-03-25. Last modified 2026-06-17.