PYSEC-2026-3830 Document Merge Service vulnerable to RCE via SSTI (xlsx tempaltes)

Impact A remote code execution RCE via server-side template injection SSTI allows for user supplied code to be executed in the server's context where it is executed as the document-merge-server user with the UID 901 thus giving an attacker considerable control over the container. The vulnerabilit...

CVE-2021-44657

In StackStorm versions prior to 3.6.0, the jinja interpreter was not run in sandbox mode and thus allows execution of unsafe system commands. Jinja does not enable sandboxed mode by default due to backwards compatibility. Stackstorm now sets sandboxed mode for jinja by default...