CVE-2012-4387

CVE-2012-4387 is a medium-severity vulnerability in Apache Struts with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Description

Apache Struts 2.0.0 through 2.3.4 allows remote attackers to cause a denial of service (CPU consumption) via a long parameter name, which is processed as an OGNL expression.

Frequently asked questions

What is CVE-2012-4387?
Apache Struts 2.0.0 through 2.3.4 allows remote attackers to cause a denial of service (CPU consumption) via a long parameter name, which is processed as an OGNL expression.
How severe is CVE-2012-4387?
CVE-2012-4387 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2012-4387 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4387?
CVE-2012-4387 primarily affects Apache Struts. In total, 35 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4387?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4387 published?
CVE-2012-4387 was published on 2012-09-05 and last updated on 2026-06-16.

References

Affected products (35)

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