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-2018-20801 Vulnerability in maven package org.webjars.npm:highcharts
CVE-2022-25876 Vulnerability in npm package link-preview-js
CVE-2021-23346 Vulnerability in maven package org.webjars.npm:html-parse-stringify2