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Apache Struts2 S2-057 - Remote Code Execution CVE-2018-11776

CVSSv3 Score
Vulnerability 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.\n

Risk description

The risk exists that a remote unauthenticated attacker can fully compromise the server to steal confidential information, install ransomware, or pivot to the internal network.


Apply the latest security patches or upgrade to a non-vulnerable version of Apache Struts2.

Not available
Detectable with
Network Scanner
Scan engine
Exploitable with Sniper
CVE Published
Aug 22, 2018
Detection added at
Software Type
Not available
Not available
Not available