ACTIVELY EXPLOITED
CVE-2013-2251: Apache Struts Improper Input Validation Vulnerability
| Vendor | Apache |
|---|---|
| Product | Struts |
| Actively exploited | Yes |
| Added to CISA KEV | 25 Mar 2022 |
| CISA federal deadline | 15 Apr 2022 |
| Weakness (CWE) | CWE-20 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
Apache Struts allows remote attackers to execute arbitrary Object-Graph Navigation Language (OGNL) expressions.
SOURCES
Other Apache flaws
- CVE-2016-3081: Apache Struts Command Injection Vulnerability
- CVE-2026-34486: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability
- CVE-2026-34197: Apache ActiveMQ Improper Input Validation Vulnerability
- CVE-2024-38475: Apache HTTP Server Improper Escaping of Output Vulnerability
- CVE-2025-24813: Apache Tomcat Path Equivalence Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.