Skip to main content

Improper Control of Generation of Code ('Code Injection')


Severity High
Score 9.8/10


In Beetl, the rendering template has a Server-Side Template Injection (SSTI) vulnerability. When the incoming template is controllable, it will be filtered by the "DefaultNativeSecurityManager" blacklist. Because blacklist filtering is not strict, the blacklist can be bypassed, leading to arbitrary code execution. This issue affects com.ibeetl:beetl versions through 3.10.0.Antlr4.5-RELEASE and com.ibeetl:beetl-core versions through 3.15.12.RELEASE.

  • LOW
  • HIGH
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-94 - Code Injection

Code injection is a type of vulnerability that allows an attacker to execute arbitrary code. This vulnerability fully compromises the machine and can cause a wide variety of security issues, such as unauthorized access to sensitive information, manipulation of data, denial of service attacks etc. Code injection is different from command injection in the fact that it is limited by the functionality of the injected language (e.g. PHP), as opposed to command injection, which leverages existing code to execute commands, usually within the context of a shell.

Advisory Timeline

  • Published