The REST Plugin in Apache Struts 2.1.x, 2.3.7 through 2.3.33 and 2.5 through 2.5.12 is using an outdated XStream library which is vulnerable and allow perform a DoS attack using malicious request with specially crafted XML payload.
CVE-2017-9793
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 7.9%, top 8% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 9%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 94.7%
- KEV
- Not listed
Published
September 20, 2017
Last Modified
May 13, 2026
References (14)
- security@apachehttp://www.brocade.com/content/dam/common/documents/content-types/security-bulletin/brocade-security-advisory-2017-429.htm
- security@apachehttp://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html
- security@apachehttp://www.securityfocus.com/bid/100611
- security@apachehttp://www.securitytracker.com/id/1039262
- security@apachehttps://security.netapp.com/advisory/ntap-20180629-0001/
- security@apachehttps://struts.apache.org/docs/s2-051.html
- security@apachehttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2
- af854a3a-2127-422b-91ae-364da2661108http://www.brocade.com/content/dam/common/documents/content-types/security-bulletin/brocade-security-advisory-2017-429.htm
- af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/100611
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039262
- af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20180629-0001/
- af854a3a-2127-422b-91ae-364da2661108https://struts.apache.org/docs/s2-051.html
- af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170907-struts2
Affected Packages
(1 across 1 ecosystem)
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.apache.struts:struts2-rest-plugin | 2.5 ... 2.5.8 (8 versions) | 2.5.13 | — |
Frequently asked(5)
What is CVE-2017-9793?
CVE-2017-9793 is a high vulnerability published on September 20, 2017. The REST Plugin in Apache Struts 2.1.x, 2.3.7 through 2.3.33 and 2.5 through 2.5.12 is using an outdated XStream library which is vulnerable and allow perform a DoS attack using malicious request with specially crafted XML payload.
When was CVE-2017-9793 disclosed?
CVE-2017-9793 was first published in the National Vulnerability Database on September 20, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-9793 actively exploited?
CVE-2017-9793 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-9793?
CVE-2017-9793 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-9793?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-9793, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-9793
Is Your Infrastructure Affected by CVE-2017-9793?
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