CVE-2026-8620NVD

Vulnerability Summary

IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to HTTP request smuggling in the Web Server Plug-ins through a specially crafted request.

Severity Level

HIGH(7.5)

Published Date

May 26, 2026

Last Modified

Jul 23, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.28%Probability

Root Weakness (CWE)

CWE-444: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 7.5 (HIGH)

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

ConfidentialityHigh

IntegrityLow

AvailabilityNone

Affected & Patched Versions

Affected Versions

Ibm Websphere Application Server >= 8.5.0.0 and < 8.5.5.30
Ibm Websphere Application Server >= 9.0.0.0 and < 9.0.5.28

Patched Versions

Ibm Websphere Application Server 8.5.5.30
Ibm Websphere Application Server 9.0.5.28

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