CVE-2026-10571: IBM WebSphere Application Server

Medium severity, CVSS 5.3. EPSS: 0.6% chance of exploitation in the next 30 days.

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 is affected by a denial of service caused by insecure deserialization. A low-privileged, administrative user could exploit this vulnerability to consume system resources when the restConnector-2.0 feature is enabled.

Affected products

• IBM WebSphere Application Server: from 17.0.0.3, before 26.0.0.9 (fixed in 26.0.0.9)

Published 2026-08-13. Last modified 2026-08-17.