Highlights
Path Traversal: 2 prior fixes. Scrutinize any change in this area.
server/serve.py: most-fixed (2 issues). Treat as high-risk during review.
2 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Insecure Deserialization: The server accepted and deserialized raw Python pickle payloads from untrusted request data, presenting a direct pathway to arbitrary remote code execution (RCE).
Prototype Pollution: Inadequate type checking and validation of document parameters in request bodies allowed malformed payloads to pollute internal object structures.
Path Traversal: Dialogue scripts resolved user-supplied filenames directly through file operations without verifying that the resolved paths remained within designated boundaries.