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CVE-2013-2251

Critical 9.8 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
Apache Struts Improper Input Validation Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply updates per vendor instructions.

Description

Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL expressions via a parameter with a crafted (1) action:, (2) redirect:, or (3) redirectAction: prefix.

Metrics

CVSS 3.1
9.8 (CRITICAL) Score source: NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
100% (percentile: 100) as of 1 November 2026
CWE
CWE-74

Affected products

apache: archiva; apache: struts; fujitsu: interstage business process manager analytics; microsoft: windows server 2003; microsoft: windows server 2008; redhat: enterprise linux; microsoft: windows server 2012; oracle: solaris; oracle: siebel apps - e-billing

References