February 10, 2022 · Applied Cybernetics Group
CVE-2017-9791 — Apache Struts 1
Apache Struts 1 Improper Input Validation Vulnerability
- Added to KEV
2022-02-10- Federal due date
2022-08-10- Vendor
- Apache
- Product
- Struts 1
- EPSS
- 99.9th percentile (score 0.941, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2017-9791
CISA short description
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
Apply updates per vendor instructions.