CVE-2026-103088
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
30/09/2026
Last modified:
30/09/2026
Description
Handlebars.java before 4.5.5 allows directory traversal. In handlebars-springmvc 4.5.3 and 4.5.4, the path-containment fix for CVE-2026-63490 validates template locations as raw percent-encoded strings, whereas the template file is opened through a URL handler that percent-decodes the path. In a Spring MVC application with a file: template prefix and a request-derived view name, a percent-encoded traversal such as %2e%2e/ bypasses both the view-resolver check and the loader-side containment and reads files outside the configured template base directory.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- https://github.com/jknack/handlebars.java/commit/f6ae3979917d05bef07f00befb4013ef00503660
- https://github.com/jknack/handlebars.java/releases/tag/v4.5.5
- https://github.com/jknack/handlebars.java/security/advisories/GHSA-pvrx-3g7m-fpgv
- https://github.com/jknack/handlebars.java/security/advisories/GHSA-pvrx-3g7m-fpgv