CVE-2026-103088
Handlebars.java before 4.5.5 allows directory traversal.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.69% probability · 53th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-24
- Source
- cve@mitre.org
EPSS moved from 0.7% on 30 September 2026 to 0.7% on 27 October 2026.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.