How severe is CVE-2012-0391?

CVE-2012-0391 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 75.6% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2012-0391: Apache Struts 2 Improper Input Validation Vulnerability

CISA Known Exploited Vulnerabilities

Apache Struts 2 Improper Input Validation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-01-21

Remediation due

2022-07-21

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2012-0391

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.

Severity

CVSS 3.1 · CISA9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

7 Links

Exploits & PoCs

18329

Third-party advisories

47393

Mailing lists

20120105 SEC Consult SA-20120104-0 :: Multiple critical vulnerabilities in Apache Struts2

Other references

Record Details

Published

2012-01-08

Last updated

2025-10-22

Assigner (CNA)

mitre

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.