WAS DoS via crafted request (8.59.0 & Liberty 17.026.0)
CVE-2026-9071 Published on June 22, 2026
IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by Uncontrolled Resource Consumption
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.
Vulnerability Analysis
CVE-2026-9071 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-9071 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-9071
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Affected Versions
IBM WebSphere Application Server:- Version 9.0.0, <= 7.0.2 Interim Fix 035 is affected.
- Version 8.5.0, <= 7.0.3 Interim Fix 017 is affected.
- Version 17.0.0.3, <= 26.0.0.6 is affected.