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TI-2026-40249 Aliases CVE-2026-55760GHSA-r4gv-qr8j-p3pg

handlebars.java FileTemplateLoader Path Traversal

Priority LOW 39CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0053 45th percentileScored 2026-11-07
Fix Fixed handlebars.java (jknack): 4.5.2com.github.jknack:handlebars (Maven): 4.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jknackhandlebars.javabefore 4.5.24.5.2Patch availableCNA
—com.github.jknack:handlebars (Maven)before 4.5.24.5.2Patch availableGHSA-r4gv-qr8j-p3pg
  • handlebars.java Vendorjknack Affected before 4.5.2 Fixed in 4.5.2 Patch available CNA
  • com.github.jknack:handlebars (Maven) Vendor— Affected before 4.5.2 Fixed in 4.5.2 Patch available GHSA-r4gv-qr8j-p3pg

Remediation

  • Fix · CNA handlebars.java (jknack) Fixed in 4.5.2
  • Fix · GHSA-r4gv-qr8j-p3pg com.github.jknack:handlebars (Maven) Fixed in 4.5.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55760
  2. 2026-10-03 Alias added: GHSA-r4gv-qr8j-p3pg

References

Other 4

  • TI-2026-45235 Handlebars.java: Arbitrary file read in `SpringTemplateLoader` via URL-fragment suffix bypass CVSS 3.1HIGH 7.5
  • TI-2026-65584 Path traversal in jknack handlebars.java CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences