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CVE-2017-9793

29
FAUCET Score

CVE-2017-9793 is a Denial of Service (DoS) vulnerability affecting Apache Struts 2.1.x, 2.3.7-2.3.33, and 2.5-2.5.12, stemming from an outdated XStream library in its REST Plugin. This flaw allows an unauthenticated attacker to trigger a DoS by sending a specially crafted XML payload. Rated with a CVSS score of 7.5 (High), it presents a low-complexity network attack vector with a high impact on availability. While there is no known public exploit code or Metasploit module, the vulnerability has garnered significant community discussion and media coverage, indicating substantial awareness and concern.

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
8.72%
Probability of exploitation in next 30 days
EPSS Percentile
94.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0872 is in the 91st percentile among its peer group of 51,551 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-rest-pluginFixed in: 2.5.13
mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-rest-pluginFixed in: 2.3.34
oraclepatch availablevia nvd_reference
View patch

Vendor Advisories (2)

mavenGHSA-vwxj-6m5m-rrvhhigh

The REST Plugin in Apache Struts is using an outdated XStream library

Oct 16, 2018
redhatCVE-2017-9793Moderate

struts: DoS attack via crafted XML payload processed by REST Plugin using XStream library

Sep 5, 2017

References

security.netapp.com / advisory/ntap-20180629-0001
struts.apache.org / docs/s2-051.html
PatchVendor Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2
Third Party Advisory
brocade.com / content/dam/common/documents/content-types/security-bulletin/brocade-security-advisory-2017-429.htm
Third Party Advisory
oracle.com / technetwork/security-advisory/alert-cve-2017-9805-3889403.html
PatchThird Party Advisory
securityfocus.com / bid/100611
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039262
Third Party AdvisoryVDB Entry