What’s Vulnerable › Vulnerabilities

CVE-2026-55760: handlebars.java FileTemplateLoader Path Traversal

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-08 · updated 2026-10-25
• Weakness: CWE-22

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.

Affected products

• jknack handlebars.java: before 4.5.2

References

• https://github.com/jknack/handlebars.java/commit/d177cdee8b750385ca7a0d0f89f2d4be73e28f4e
• https://github.com/jknack/handlebars.java/releases/tag/v4.5.2
• https://github.com/jknack/handlebars.java/security/advisories/GHSA-r4gv-qr8j-p3pg

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