Template Injection Affecting org.thymeleaf:thymeleaf package, versions [,3.1.4.RELEASE)
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Test your applications- Snyk IDSNYK-JAVA-ORGTHYMELEAF-16078379
- published16 Apr 2026
- disclosed15 Apr 2026
- creditDawid Bakaj
Introduced: 15 Apr 2026
NewCVE-2026-40478 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade org.thymeleaf:thymeleaf to version 3.1.4.RELEASE or higher.
Overview
Affected versions of this package are vulnerable to Template Injection due to the TemplateEngine's improper invalidation of certain syntactic patterns during expression evaluation. An attacker can inject into sensitive objects to execute unauthorized actions.