CVE-2026-56122CWE-22

Winstone Servlet Engine 0.9.10 Path Traversal via HTTP Request Paths

High · published June 25, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
45.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
EPSS
0.00553 · 45.5th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-06-25T13:34Z
EPSS history
Timeline
  • 25 JUN 13:34Z
    Winstone Servlet Engine 0.9.10 Path Traversal via HTTP Request Paths
    cvelistv5