Description
Thymeleaf through 3.1.1.RELEASE, as used in spring-boot-admin (aka Spring Boot Admin) through 3.1.1 and other products, allows sandbox bypass via crafted HTML. This may be relevant for SSTI (Server Side Template Injection) and code execution in spring-boot-admin if MailNotifier is enabled and there is write access to environment variables via the UI.
Remediation
References
https://github.com/p1n93r/SpringBootAdmin-thymeleaf-SSTI
Related Vulnerabilities
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CVE-2016-5004 Vulnerability in maven package org.apache.xmlrpc:xmlrpc
CVE-2021-21179 Vulnerability in maven package org.webjars.npm:electron
CVE-2020-7636 Vulnerability in npm package adb-driver
CVE-2021-23337 Vulnerability in maven package org.fujion.webjars:lodash