WebSphere Application Server vulnerability

IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty is vulnerable to HTTP request smuggling.

Published 28 Jul 2026Updated 23 Sep 20261 sources
CVSS 7.4

What happened

IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty is vulnerable to HTTP request smuggling.

Affected versions

WebSphere Application Server: 9.0; 8.5; 17.0.0.3 through 26.0.0.7 (semver) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.