CVE-2026-56122
Winstone Servlet Engine 0.9.10 Path Traversal via HTTP Request Paths
- State
- Published
- Severity
- 8.7 High
- Published
- Jun 25, 2026
- Updated
- Jun 25, 2026
- Reserved
- Jun 18, 2026
Description
Winstone Servlet Engine through 0.9.10 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files by sending HTTP GET requests with dot-dot-slash sequences that are not sanitized when serving static files from the configured webroot. Attackers can traverse outside the webroot directory using traversal-prefixed paths in a single HTTP request to read any file accessible to the servlet engine process, including sensitive system files when the service runs with elevated privileges.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
Winstone Servlet Containerrickknowles |
|
References
- https://gist.github.com/VAMorales/ce93f10215c43b2a8344426f4dd59cd3technical-descriptionexploit
- https://winstone.sourceforge.net/product
- https://www.vulncheck.com/advisories/winstone-servlet-engine-path-traversal-via-http-request-pathsthird-party-advisory
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