Vulnerability Intelligence Report
Apache Struts 1 Improper Input Validation Vulnerability
CVE-2017-9791
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.
CISA KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:98.93%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-20 ↗CWE-20 Improper Input Validation
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Apache Software Foundation | Apache Struts | 2.1.x series (affected), 2.3.x series (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
98.931%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Apache Software Foundation · Vendor · USA |
| Reserved | 2017-06-21T00:00:00 |
| Published | 2017-07-10T16:00:00 |
| Patch Date | 2017-07-07 |
| Last Updated | 2025-10-21T23:55:38 |
Community Chatter & Buzz