How severe is CVE-2016-4430?

CVE-2016-4430 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-4430 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4430?

CVE-2016-4430 primarily affects Apache Struts. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-4430?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-4430 published?

CVE-2016-4430 was published on 2016-07-04 and last updated on 2026-06-17.

CVE-2016-4430

CVE-2016-4430 is a high-severity vulnerability in Apache Struts with a CVSS 3.x base score of 8.8. 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-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Apache Struts
Published: 2016-07-04
Last modified: 2026-06-17

Description

Apache Struts 2 2.3.20 through 2.3.28.1 mishandles token validation, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks via unspecified vectors.

Frequently asked questions

What is CVE-2016-4430?: Apache Struts 2 2.3.20 through 2.3.28.1 mishandles token validation, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks via unspecified vectors.
How severe is CVE-2016-4430?: CVE-2016-4430 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-4430 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4430?: CVE-2016-4430 primarily affects Apache Struts. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-4430?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-4430 published?: CVE-2016-4430 was published on 2016-07-04 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:apache:struts:2.3.20:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:2.3.20.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:2.3.20.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:2.3.24:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:2.3.24.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:2.3.24.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:2.3.28:*:*:*:*:*:*:*
cpe:2.3:a:apache:struts:2.3.28.1:*:*:*:*:*:*:*

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