CVE-2012-0391
Apache Struts 2 Improper Input Validation Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Struts 2, fix it now.
CISA required action: Apply updates per vendor instructions.
US federal civilian agencies must remediate by Jul 21, 2022.
Patch status
No official fix confirmed yet
Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.
Description
The ExceptionDelegator component in Apache Struts before 2.2.3.1 interprets parameter values as OGNL expressions during certain exception handling for mismatched data types of properties, which allows remote attackers to execute arbitrary Java code via a crafted parameter.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Fixed in | Source |
|---|---|---|---|---|
| Struts | Apache Software Foundation | < 2.2.3.1 | 2.2.3.1 | NVD |
| Struts 2 | Apache Software Foundation | — | — | KEV |
Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2012-0391 scored CVSS 9.8: Apache Struts 2, Apache Struts 2 Improper Input Validation Vulnerability
CISA lists this as exploited in the wild. Unpatched Struts 2 systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
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Coverage
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