Description

Thymeleaf is a server-side Java template engine for web and standalone environments. Versions 3.1.3.RELEASE and prior contain a security bypass vulnerability in the expression execution mechanisms. Although the library provides mechanisms to prevent expression injection, it fails to properly restrict the scope of accessible objects, allowing specific potentially sensitive objects to be reached from within a template. If an application developer passes unvalidated user input directly to the template engine, an unauthenticated remote attacker can bypass the library's protections to achieve Server-Side Template Injection (SSTI). This issue has ben fixed in version 3.1.4.RELEASE.

INFO

Published Date :

2026-04-17T21:53:47.271Z

Last Modified :

2026-04-22T03:55:41.093Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40477 vulnerability.

Vendors Products
Thymeleaf
  • Org.thymeleaf:thymeleaf-spring5
  • Org.thymeleaf:thymeleaf-spring6
  • Thymeleaf
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40477.

URL Resource
https://github.com/thymeleaf/thymeleaf/security/advisories/GHSA-r4v4-5mwr-2fwr cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-40477 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-40477 cve-icon
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