Yamcs Vulnerable to Authenticated Remote Code Execution (RCE) via Jython Algorithm Code Injection

Summary A Server-Side Code Injection vulnerability exists in the Yamcs script evaluation engine for Python algorithms. The application dynamically compiles and evaluates user-controlled algorithm text using Jython via the JSR-223 ScriptEngine API without enforcing a secure sandbox. An authenticat...

Yamcs Vulnerable to Server-Side Code Injection (RCE) via Janino Expression Engine in `JavaExprAlgorithmExecutionFactory`

Summary A Server-Side Code Injection vulnerability exists in the Yamcs algorithm evaluation engine org.yamcs.algorithms.JavaExprAlgorithmExecutionFactory. The application dynamically compiles and evaluates user-controlled algorithm text without enforcing a secure sandbox. An authenticated user wi...

PT-2026-44161

Name of the Vulnerable Software and Affected Versions Yamcs versions 4.7.3 through 5.12.6 Description The Nashorn ScriptEngine used to evaluate user-supplied algorithm text is constructed without a ClassFilter. This allows a user with the ChangeMissionDatabase privilege to execute arbitrary Java...

PT-2026-43457

Summary A Server-Side Code Injection vulnerability exists in the Yamcs algorithm evaluation engine org.yamcs.algorithms.JavaExprAlgorithmExecutionFactory. The application dynamically compiles and evaluates user-controlled algorithm text without enforcing a secure sandbox. An authenticated user wi...

PT-2026-44162

Summary A Server-Side Code Injection vulnerability exists in the Yamcs script evaluation engine for Python algorithms. The application dynamically compiles and evaluates user-controlled algorithm text using Jython via the JSR-223 ScriptEngine API without enforcing a secure sandbox. An authenticat...