CVE-2023-27554: IBM WebSphere Application Server

Medium severity, CVSS 6.3. EPSS: 0.9% chance of exploitation in the next 30 days.

IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 249185.

Affected products

• IBM WebSphere Application Server: from 8.5.0.0, before 8.5.5.24 (fixed in 8.5.5.24); from 9.0.0.0, before 9.0.5.16 (fixed in 9.0.5.16)

Published 2023-05-11. Last modified 2026-06-17.