High severity · published Jul 8, 2026
CVE-2026-55760
handlebars.java FileTemplateLoader Path Traversal
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
Handlebars.java provides logic-less and semantic Mustache templates with Java. Prior to 4.5.2, applications that pass user-controlled input to Handlebars.compile() using FileTemplateLoader or ClassPathTemplateLoader are vulnerable to path traversal, allowing arbitrary file read through template names derived from URL path parameters, request parameters, or other user-controlled sources. This issue is fixed in version 4.5.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HA
handlebars.java · jknack
< 4.5.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55760
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55760
github.com
https://github.com/jknack/handlebars.java/commit/d177cdee8b750385ca7a0d0f89f2d4be73e28f4e
github.com
https://github.com/jknack/handlebars.java/releases/tag/v4.5.2
github.com
https://github.com/jknack/handlebars.java/security/advisories/GHSA-r4gv-qr8j-p3pg
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