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.
Metrics
Affected Vendors & Products
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Solution
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Workaround
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References
History
Wed, 30 Sep 2026 01:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Weaknesses | CWE-24 | |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-09-30T00:55:19.940Z
Reserved: 2026-09-30T00:55:19.173Z
Link: CVE-2026-103088
Vulnrichment
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NVD
Status : Deferred
Published: 2026-09-30T02:16:57.203
Modified: 2026-09-30T02:16:57.340
Link: CVE-2026-103088
Redhat
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OpenCVE Enrichment
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Weaknesses