PT-2026-52437 · Rickknowles · Winstone Servlet Container

Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-56122

NVD

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-56122

Affected Products

Winstone Servlet Container

References · 4

• 🔥 https://gist.github.com/VAMorales/ce93f10215c43b2a8344426f4dd59cd3 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-56122 · Security Note
• https://vulncheck.com/advisories/winstone-servlet-engine-path-traversal-via-http-request-paths · Note
• https://winstone.sourceforge.net · Note