CVE-2017-9791: Apache Struts 1 Improper Input Validation Vulnerability

CISA Known Exploited Vulnerabilities

Name

Apache Struts 1 Improper Input Validation Vulnerability

Vendor

Apache

Product

Struts 1

Added to the catalog

2022-02-10

Due date for US federal agencies

2022-08-10

Weaknesses

CWE-20

Catalog version

2026.10.30

The Struts 1 plugin in Apache Struts might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.

Required action (CISA)

Apply updates per vendor instructions.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://nvd.nist.gov/vuln/detail/CVE-2017-9791

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2017-07-10T16:29:00.277

Last modified

2026-06-17T01:28:55.190

Weaknesses

CWE-20

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.

References

• http://struts.apache.org/docs/s2-048.html (Mitigation, Vendor Advisory)
• http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html (Patch, Third Party Advisory)
• http://www.securityfocus.com/bid/99484 (Broken Link, Third Party Advisory, VDB Entry)
• http://www.securitytracker.com/id/1038838 (Broken Link, Third Party Advisory, VDB Entry)
• https://security.netapp.com/advisory/ntap-20180706-0002/ (Third Party Advisory)
• https://www.exploit-db.com/exploits/42324/ (Third Party Advisory, VDB Entry)
• https://www.exploit-db.com/exploits/44643/ (Third Party Advisory, VDB Entry)
• http://struts.apache.org/docs/s2-048.html (Mitigation, Vendor Advisory)
• http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html (Patch, Third Party Advisory)
• http://www.securityfocus.com/bid/99484 (Broken Link, Third Party Advisory, VDB Entry)
• http://www.securitytracker.com/id/1038838 (Broken Link, Third Party Advisory, VDB Entry)
• https://security.netapp.com/advisory/ntap-20180706-0002/ (Third Party Advisory)
• https://www.exploit-db.com/exploits/42324/ (Third Party Advisory, VDB Entry)
• https://www.exploit-db.com/exploits/44643/ (Third Party Advisory, VDB Entry)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9791 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:41:35.381Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2017-9791

CVE record

Assigner

apache

State

PUBLISHED

Published

2017-07-10T16:00:00.000Z

Updated

2025-10-21T23:55:38.964Z

Problem types

Remote Code Execution

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.

References

• http://www.oracle.com/technetwork/security-advisory/alert-cve-2017-9805-3889403.html
• 99484
• 42324
• http://struts.apache.org/docs/s2-048.html
• 1038838
• 44643
• https://security.netapp.com/advisory/ntap-20180706-0002/

Read on 2026-11-03T00:35:44.162Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2017/9xxx/CVE-2017-9791.json

Also known as / affected packages

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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