CVE-2016-4465

mediumpriority · track · 25EPSS 0.104 · 96 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

10.4% (96th) EPSS

CVSS 5 · medium

Is it mine?

14 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Psecondary · FSTEC (BDU) RU

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · OSV

v3.04.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20USCWE-20US

affected products (14)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Apache Software Foundation Struts2.3.20 → 2.3.28.1fstec_bduRU
Apache Software Foundation Struts2.5.0 → 2.5.1fstec_bduRU
apache struts= 2.3.20nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.3.20.1nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.3.20.3nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.3.24nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.3.24.1nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.3.24.3nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.3.28nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.3.28.1nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
apache struts= 2.5nvdUScpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
Maven org.apache.struts:struts2-core2.3.20 → 2.3.29osvUSpkg:maven/org.apache.struts/struts2-core
Maven org.apache.struts:struts2-core2.5.0 → 2.5.13osvUSpkg:maven/org.apache.struts/struts2-core

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-xg75-68x3-7p3qApache Struts vulnerable to possible DoS attack when using URLValidator2022-05-17ghsa · osvUS
The URLValidator class in Apache Struts 2 2.3.20 through 2.3.28.1 and 2.5.x before 2.5.13 allows remote attackers to cause a denial of service via a null value for a URL field.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv NVD CVE.org MITRE

published 2016-07-04modified 2026-06-17

related (25,193)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-88771US	critical9.8OT critical	82.2% (100th)	KEV	2026-09-27
Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS,…
CVE-2026-93952US	—OT critical	1.38% (72nd)	KEV	2026-09-22
VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successf…
CVE-2026-12569US	critical9.8OT critical	46.0% (99th)	KEV	2026-06-18
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of u…
CVE-2026-34910US	—OT critical	90.0% (100th)	KEV	2026-05-22
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
CVE-2026-6973US	—OT critical	34.5% (98th)	KEV	2026-05-07
An Improper Input Validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remotely authenticated user with administrative access to achieve remote code…

+25188 more

references (19)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan