CVE-2026-55760 | Handlebars.java provides logic-less and semantic Mustache te… | CVSS 7.5 HIGH

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.

Metadata

CVE ID: CVE-2026-55760
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-17 14:34 UTC
Published: 2026-07-08 19:31 UTC
Last updated: 2026-07-09 14:37 UTC
Primary CWE: CWE-22
CWE-22: Improper Limitation of a Pathname to a Restricted Di…
Vendor / Product: jknack / handlebars.java
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
jknack	handlebars.java	—	< 4.5.2

Weakness (CWE)

CWE	Source	Description
CWE-22	cna	CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References (3)

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