CVE-2017-9804
Apache Struts allows entering a custom URL in a form field if built-in URLValidator is used
7.5
HIGH
CVSS 3.1
EPSS 4.6%
Description
In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a 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. NOTE: this vulnerability exists because of an incomplete fix for S2-047 / CVE-2017-7672.
How to fix CVE-2017-9804
To remediate CVE-2017-9804, upgrade the affected package to a fixed version below.
- —upgrade to 2.3.34 or later
Is CVE-2017-9804 being exploited?
Low — EPSS is 4.6%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 2.3.7, < 2.3.34
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |