CVE-2026-9002
Medium · 6.5CVSS
6.5
EPSS
0.3%
Published
Jun 30, 2026
CISA due date
—
The record
IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to improper validation in the XDF decoder. The application processes deeply nested Protocol Buffers messages and attacker-controlled length prefixes without sufficient bounds checking, which may allow an attacker on the same network to trigger a StackOverflowError or OutOfMemoryError, resulting in a crash of the WebSphere Application Server JVM.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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