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Fencer Intel
medium 5.3

CVE-2016-4465 json

Apache Struts vulnerable to possible DoS attack when using URLValidator

published 2016-07-04 10 y ago modified 2026-06-17 4 mo ago also GHSA-xg75-68x3-7p3q , EUVD-2022-5779

cvss
5.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.4%
EPSS 10.4% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.apache.struts:struts2-core 2.3.29, 2.5.13

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-4465 updated cvss 4.3

struts: Possible DoS attack when using URLValidator

  • Red Hat Enterprise Linux 5 struts Red Hat Satellite 5 struts
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

10.37% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
maven org.apache.struts:struts2-core
>=2.3.20, <2.3.29
>=2.5.0, <2.5.13
2.3.29
2.5.13

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.