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4 vulnerabilities found for handlebars.java by jknack
CVE-2026-63490 (GCVE-0-2026-63490)
Vulnerability from nvd – Published: 2026-08-20 14:45 – Updated: 2026-08-25 14:41
VLAI
EPSS
VEX
Title
Handlebars.java: Arbitrary file read in `SpringTemplateLoader` via URL-fragment suffix bypass
Summary
Handlebars.java provides logic-less and semantic Mustache templates with Java. Prior to 4.5.3, com.github.jknack.handlebars.springmvc.SpringTemplateLoader resolves attacker-influenced Spring MVC view names through Spring ResourceLoader without the path-containment validation used by other URL-based loaders. In handlebars-springmvc/src/main/java/com/github/jknack/handlebars/springmvc/SpringTemplateLoader.java, a view name using a file: or classpath: URL and ending with the # fragment delimiter places the appended .hbs suffix in the fragment, which FileUrlResource.exists() and URL.openStream() discard. HandlebarsViewResolver in handlebars-springmvc/src/main/java/com/github/jknack/handlebars/springmvc/HandlebarsViewResolver.java then passes the attacker-controlled name to handlebars.compile(), allowing an unauthenticated remote attacker to read files accessible to the JVM when an application exposes a controller with a user-influenced view name. This issue is fixed in version 4.5.3.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:41 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jknack/handlebars.java/securit… | x_refsource_CONFIRM |
| https://github.com/jknack/handlebars.java/commit/… | x_refsource_MISC |
| https://github.com/jknack/handlebars.java/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jknack | handlebars.java |
Affected:
< 4.5.3
|
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}
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CVE-2026-55760 (GCVE-0-2026-55760)
Vulnerability from nvd – Published: 2026-07-08 19:31 – Updated: 2026-07-09 14:37
VLAI
EPSS
VEX
Title
handlebars.java FileTemplateLoader Path Traversal
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 14:37 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jknack/handlebars.java/securit… | x_refsource_CONFIRM |
| https://github.com/jknack/handlebars.java/commit/… | x_refsource_MISC |
| https://github.com/jknack/handlebars.java/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jknack | handlebars.java |
Affected:
< 4.5.2
|
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CVE-2026-63490 (GCVE-0-2026-63490)
Vulnerability from cvelistv5 – Published: 2026-08-20 14:45 – Updated: 2026-08-25 14:41
VLAI
EPSS
VEX
Title
Handlebars.java: Arbitrary file read in `SpringTemplateLoader` via URL-fragment suffix bypass
Summary
Handlebars.java provides logic-less and semantic Mustache templates with Java. Prior to 4.5.3, com.github.jknack.handlebars.springmvc.SpringTemplateLoader resolves attacker-influenced Spring MVC view names through Spring ResourceLoader without the path-containment validation used by other URL-based loaders. In handlebars-springmvc/src/main/java/com/github/jknack/handlebars/springmvc/SpringTemplateLoader.java, a view name using a file: or classpath: URL and ending with the # fragment delimiter places the appended .hbs suffix in the fragment, which FileUrlResource.exists() and URL.openStream() discard. HandlebarsViewResolver in handlebars-springmvc/src/main/java/com/github/jknack/handlebars/springmvc/HandlebarsViewResolver.java then passes the attacker-controlled name to handlebars.compile(), allowing an unauthenticated remote attacker to read files accessible to the JVM when an application exposes a controller with a user-influenced view name. This issue is fixed in version 4.5.3.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:41 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jknack/handlebars.java/securit… | x_refsource_CONFIRM |
| https://github.com/jknack/handlebars.java/commit/… | x_refsource_MISC |
| https://github.com/jknack/handlebars.java/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jknack | handlebars.java |
Affected:
< 4.5.3
|
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CVE-2026-55760 (GCVE-0-2026-55760)
Vulnerability from cvelistv5 – Published: 2026-07-08 19:31 – Updated: 2026-07-09 14:37
VLAI
EPSS
VEX
Title
handlebars.java FileTemplateLoader Path Traversal
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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 14:37 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jknack/handlebars.java/securit… | x_refsource_CONFIRM |
| https://github.com/jknack/handlebars.java/commit/… | x_refsource_MISC |
| https://github.com/jknack/handlebars.java/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jknack | handlebars.java |
Affected:
< 4.5.2
|
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},
{
"name": "https://github.com/jknack/handlebars.java/commit/d177cdee8b750385ca7a0d0f89f2d4be73e28f4e",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/jknack/handlebars.java/commit/d177cdee8b750385ca7a0d0f89f2d4be73e28f4e"
},
{
"name": "https://github.com/jknack/handlebars.java/releases/tag/v4.5.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/jknack/handlebars.java/releases/tag/v4.5.2"
}
],
"source": {
"advisory": "GHSA-r4gv-qr8j-p3pg",
"discovery": "UNKNOWN"
},
"title": "handlebars.java FileTemplateLoader Path Traversal"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-55760",
"datePublished": "2026-07-08T19:31:22.919Z",
"dateReserved": "2026-06-17T14:34:51.880Z",
"dateUpdated": "2026-07-09T14:37:41.666Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}