Spring-boot-admin sandbox bypass via crafted HTML
Thymeleaf through 3.1.1.RELEASE as used in spring-boot-admin (aka Spring Boot Admin) through 3.1.1 allows for a 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.
Spring Boot Admin 3.1.2 and 2.7.16 contain mitigations for the issue. This bypass is achived via a library called Thymeleaf which has added counter measures for this sort of bypass in version 3.1.2.RELEASE which has explicity forbidden static access to org.springframework.util in expressions. Thymeleaf itself should not be considered vulnerable.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | de.codecentric:spring-boot-admin-server | >= 3.0.0, < 3.1.2, < 2.7.16 | 3.1.2, 2.7.16 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-38286
- https://github.com/codecentric/spring-boot-admin/issues/2613
- https://github.com/thymeleaf/thymeleaf/issues/966
- https://github.com/codecentric/spring-boot-admin/pull/2615
- https://github.com/codecentric/spring-boot-admin/commit/f1f6ac6f613e1c0afc121c8989f28b4155a6797a
- https://github.com/codecentric/spring-boot-admin/commit/f1f6ac6f613e1c0afc121c8989f28b4155a6797a#diff-1ea8b144c29588e08221597d56d8be10b4b4a210f248a83f2e837152a3d2e0d7
- https://github.com/codecentric/spring-boot-admin
- https://github.com/codecentric/spring-boot-admin/blob/master/spring-boot-admin-server/pom.xml
- https://github.com/p1n93r/SpringBootAdmin-thymeleaf-SSTI
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-77- Platform
- Java / Kotlin (Maven)
- Package
de.codecentric:spring-boot-admin-server- Disclosed
- 14.07.2023
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-7gj7-224w-vpr3 - CC BY 4.0
Vulnerability history: de.codecentric:spring-boot-admin-server
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.