CVE-2017-9805
Apache Struts Deserialization of Untrusted Data Vulnerability
IN CISA KEV
The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.
- Vendor
- Apache
- Product
- Struts
- CVSS 3.1
- 8.1 (high), scored by NVD (primary)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1
- 8.1 (high), scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-502
- Published
- 2017-09-15
- NVD modified
- 2026-06-17
- NVD status
- Analyzed
CISA KEV
- Date added
- 2021-11-03
- Due date
- 2022-05-03
- Ransomware use
- Unknown
- Required action
- Apply updates per vendor instructions.
EPSS
99.4% chance of exploitation in the next 30 days (percentile 99th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
References
- www.oracle.com (Patch, Third Party Advisory)
- www.securityfocus.com (Broken Link, Third Party Advisory, VDB Entry)
- www.securitytracker.com (Broken Link, Third Party Advisory, VDB Entry)
- blogs.apache.org (Vendor Advisory)
- bugzilla.redhat.com (Issue Tracking, Third Party Advisory, VDB Entry)
- cwiki.apache.org (Mitigation, Vendor Advisory)
- lgtm.com (Broken Link)
- security.netapp.com (Third Party Advisory)
- struts.apache.org (Mitigation, Vendor Advisory)
- tools.cisco.com (Third Party Advisory)
- www.kb.cert.org (Third Party Advisory, US Government Resource)
- www.oracle.com (Patch, Third Party Advisory)
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.