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High · 7.5 CVE-2026-56122 EUVD-2026-39397GHSA-qf2j-8858-jvcv

Winstone Servlet Engine 0.9.10 Path Traversal via HTTP Request Paths

Published Jun 25, 2026 · Updated Jun 25, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
rickknowles Winstone Servlet Container ≤ 0.9.10 —

References