CVEvulnerability

CVE-2026-41901

9.0 CRITICAL Published 2026-05-12 Modified 2026-06-17 Official page ↗
Status
Deferred
Published
2026-05-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.0 CRITICAL — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-1336, CWE-917

Description

Thymeleaf is a server-side Java template engine for web and standalone environments. Prior to 3.1.5.RELEASE, a security bypass vulnerability exists in the expression execution mechanisms of Thymeleaf. Although the library provides mechanisms to avoid the execution of potentially dangerous expressions in some specific sandboxed (restricted) contexts, it fails to properly neutralize specific constructs that allow this kind of expressions to be executed. If an application developer passes to the template engine unsanitized variables that contain such expressions, and these values are used in sandboxed contexts inside the templates, these expressions can be executed achieving Server-Side Template Injection (SSTI). This vulnerability is fixed in 3.1.5.RELEASE.

Related

Weakness · CWE (2)

  • CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine weakness
  • CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement weakness

References