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CVE-2018-11776

High 8.1 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
Apache Struts Remote Code Execution Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply updates per vendor instructions.

Description

Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upper package have no or wildcard namespace and similar to results, same possibility when using url tag which doesn't have value and action set and in same time, its upper package have no or wildcard namespace.

Metrics

CVSS 3.1
8.1 (HIGH) Score source: NVD CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
100% (percentile: 100) as of 1 November 2026

Affected products

apache: struts; netapp: active iq unified manager; netapp: oncommand insight; netapp: oncommand workflow automation; netapp: snapcenter; oracle: communications policy management; oracle: enterprise manager base platform; oracle: mysql enterprise monitor

References