CVE-2017-9791
Apache Struts 1 Improper Input Validation Vulnerability
IN CISA KEV
The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.
- Vendor
- Apache
- Product
- Struts 1
- CVSS 3.1
- 9.8 (critical), scored by NVD (primary)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1
- 9.8 (critical), scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-20
- Published
- 2017-07-10
- NVD modified
- 2026-06-17
- NVD status
- Analyzed
CISA KEV
- Date added
- 2022-02-10
- Due date
- 2022-08-10
- Ransomware use
- Unknown
- Required action
- Apply updates per vendor instructions.
EPSS
98.9% 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
- struts.apache.org (Mitigation, Vendor Advisory)
- 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)
- security.netapp.com (Third Party Advisory)
- www.exploit-db.com (Third Party Advisory, VDB Entry)
- www.exploit-db.com (Third Party Advisory, VDB Entry)
- struts.apache.org (Mitigation, Vendor Advisory)
- 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)
- security.netapp.com (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.