CVE-2026-8646
High
Description
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 HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.
SeverityHigh
CVSS7.4
Exploit probability—
Product
Ibm Websphere Application Server
PublishedJun 22, 2026
First seenJun 22, 2026
Weakness typeCWE-444CWE-444
How to fix
Update
- ibm websphere_application_server8.5.5.30, 9.0.5.29, 26.0.0.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ibm websphere_application_server | 8.5.0.0 ≤ v < 8.5.5.30, 9.0.0.0 ≤ v < 9.0.5.29, 17.0.0.3 ≤ v < 26.0.0.7 | 8.5.5.30, 9.0.5.29, 26.0.0.7 |
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