Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2017-9804

29
FAUCET Score

CVE-2017-9804 is a denial-of-service vulnerability affecting Apache Struts versions 2.3.7 through 2.3.33 and 2.5 through 2.5.12. It allows an attacker to overload the server process by submitting a specially crafted URL to a form field that uses the built-in URLValidator. This vulnerability carries a high CVSS score of 7.5, indicating a network-based attack with low complexity and high impact on availability. While there is no public exploit code available in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered significant community discussion and media coverage, suggesting awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
2.3.7CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.7:*:*:*:*:*:*:*
2.3.8CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.8:*:*:*:*:*:*:*
2.3.9CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.9:*:*:*:*:*:*:*
2.3.10CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.10:*:*:*:*:*:*:*
2.3.11CPE matchmatch criteria
cpe:2.3:a:apache:struts:2.3.11:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
8.17%
Probability of exploitation in next 30 days
EPSS Percentile
94.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0817 is in the 91st percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-coreFixed in: 2.3.34
mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-coreFixed in: 2.5.13
oraclepatch availablevia nvd_reference
View patch

Vendor Advisories (2)

mavenGHSA-x5x7-3v85-wpc4high

Apache Struts allows entering a custom URL in a form field if built-in URLValidator is used

Oct 16, 2018
redhatCVE-2017-9804Moderate

struts: A regular expression Denial of Service when using URLValidator

Sep 5, 2017

References

security.netapp.com / advisory/ntap-20180629-0001
struts.apache.org / docs/s2-050.html
PatchVendor Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2
Third Party Advisory
arubanetworks.com / assets/alert/ARUBA-PSA-2017-003.txt
Third Party Advisory
oracle.com / technetwork/security-advisory/alert-cve-2017-9805-3889403.html
PatchThird Party Advisory
securityfocus.com / bid/100612
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039261
Third Party AdvisoryVDB Entry