CVE-2012-0391The 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 allow…
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It affects apache struts. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jan 21, 2022; federal agencies had to remediate by Jul 21, 2022. Treat that date as your deadline.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Added to CISA KEV Jan 21, 2022; federal remediation due Jul 21, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 75.60% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 22, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
apache struts apache:struts | before 2.2.3.1 | NVD |
References
- http://www.exploit-db.com/exploits/18329exploit, x-refsource-exploit-db
- http://archives.neohapsis.com/archives/bugtraq/2012-01/0031.htmlmailing-list, x-refsource-bugtraq, broken-link, exploit
- http://struts.apache.org/2.x/docs/version-notes-2311.htmlx-refsource-confirm, vendor-advisory
- http://struts.apache.org/2.x/docs/s2-008.htmlx-refsource-confirm, vendor-advisory
- https://www.sec-consult.com/files/20120104-0_Apache_Struts2_Multiple_Critical_Vulnerabilities.txtx-refsource-misc, broken-link, exploit
- https://issues.apache.org/jira/browse/WW-3668x-refsource-confirm, vendor-advisory
- http://secunia.com/advisories/47393third-party-advisory, x-refsource-secunia, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-0391us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.