CVE-2016-4465

MEDIUMNVD 5.35.3—

5.3

The URLValidator class in Apache Struts 2 2.3.20 through 2.3.28.1 and 2.5.x before 2.5.1 allows remote attackers to cause a denial of service via a null value for a URL field.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 93.3%
KEV: Not listed

Published

July 4, 2016

Last Modified

May 6, 2026

References (14)

secalert@redhathttp://jvn.jp/en/jp/JVN12352818/index.html
secalert@redhathttp://jvndb.jvn.jp/jvndb/JVNDB-2016-000114
secalert@redhathttp://www-01.ibm.com/support/docview.wss?uid=swg21987854
secalert@redhathttp://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
secalert@redhathttp://www.securityfocus.com/bid/91278
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1348253
secalert@redhathttps://struts.apache.org/docs/s2-041.html
af854a3a-2127-422b-91ae-364da2661108http://jvn.jp/en/jp/JVN12352818/index.html
af854a3a-2127-422b-91ae-364da2661108http://jvndb.jvn.jp/jvndb/JVNDB-2016-000114
af854a3a-2127-422b-91ae-364da2661108http://www-01.ibm.com/support/docview.wss?uid=swg21987854
af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/91278
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1348253
af854a3a-2127-422b-91ae-364da2661108https://struts.apache.org/docs/s2-041.html

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.apache.struts:struts2-core	2.5 ... 2.5.8 (8 versions)	2.5.13	—

Data Freshness Timeline

(refreshed 7× in last 7d / 15× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-24 16:43 UTCepss_batch
2026-05-23 00:10 UTCEG score recompute
2026-05-22 19:43 UTCEG score recompute
2026-05-21 22:40 UTCepss_batch
2026-05-20 22:37 UTCepss_batch
2026-05-20 22:37 UTCepss_batch
2026-05-20 22:37 UTCepss_batch
2026-05-20 11:21 UTCepss_batch
2026-05-20 11:21 UTCepss_batch
2026-05-20 11:21 UTCepss_batch
2026-05-18 21:30 UTCepss_batch
2026-05-18 21:30 UTCepss_batch

Frequently asked(5)

What is CVE-2016-4465?

CVE-2016-4465 is a medium vulnerability published on July 4, 2016. The URLValidator class in Apache Struts 2 2.3.20 through 2.3.28.1 and 2.5.x before 2.5.1 allows remote attackers to cause a denial of service via a null value for a URL field.

When was CVE-2016-4465 disclosed?

CVE-2016-4465 was first published in the National Vulnerability Database on July 4, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-4465 actively exploited?

CVE-2016-4465 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-4465?

CVE-2016-4465 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2016-4465?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-4465, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2016-4465

📅 Published

🔄 Last Modified

🔗 References (14)