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Fencer Vulns
medium 5.9

CVE-2017-7672 json

Apache Struts Improper Input Validation vulnerability

published 2017-07-13 9 y ago modified 2026-06-17 4 mo ago also GHSA-9gp7-jvm2-r4mx , EUVD-2018-0563

cvss
5.9
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.8%
EPSS 9.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

If an application allows enter an URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL. Solution is to upgrade to Apache Struts version 2.5.12.

Patch / fix

  • maven org.apache.struts:struts2-core 2.5.12

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-2017-7672 updated cvss 3.1

struts: Denial of service in built-in URLValidator

  • Red Hat Enterprise Linux 5 struts Red Hat JBoss Enterprise Web Server 2 struts 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

9.84% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
GitHub 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.struts:struts2-core
>=2.5.0, <2.5.12
2.5.12

Affected products

  • Apache Software Foundation Apache Struts

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns 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.