CVE-2017-9791
Apache Struts 1 Improper Input Validation Vulnerability
- Published
- Jul 10, 2017
- Updated
- Oct 21, 2025
- Assigning CNA
- apache
- Evidence observed
- Jul 7, 2017
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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.
Sources
6- Struts2-048Exploit
Python-based proof-of-concept exploit for CVE-2017-9791 (Apache Struts2 S2-048) with check and command execution modes for penetration testing.
- CVE-2017-9791Exploit
Metasploit module for Apache Struts CVE-2017-9791 Remote Code Execution Vulnerability
- s2-048Exploit
Apache struts struts 2 048, CVE-2017-9791.
Responsible use
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