GitHub Security Advisory: GHSA-gmjg-hv98-qggq
Package: praisonaiagents (PIP)
Severity: HIGH (CVSS 8.6)
CWE: CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Vulnerable versions: <= 1.6.36
Patched in: 1.6.37

Summary: PraisonAI has unsafe tool resolution in `ToolExecutionMixin.execute_tool`: undeclared `__main__` callables execute

Details:
### Summary
`praisonaiagents` resolves unresolved tool names against module globals and `__main__` after it fails to match the declared tool list and the registry. With the default agent configuration, `_perm_allow` is `None`, so undeclared non-dangerous tool names are not rejected by the permission gate. An attacker who can influence tool-call names can therefore invoke unintended application callables that were never declared as tools.

### Details
The vulnerable resolution path is in [`[tool_execution.py](https://github.com/Users/shmulc/Documents/Codex/2026-05-03/please-go-over-tmp-tp-advisories/repos/PraisonAI/src/praisonai-agents/praisonaiagents/agent/tool_execution.py:734)`](/Users/shmulc/Documents/Codex/2026-05-03/please-go-over-tmp-tp-advisories/repos/PraisonAI/src/praisonai-agents/praisonaiagents/agent/tool_execution.py:734). After searching declared tools and the registry, execution falls back to `globals()` and then `__main__`:

```python
func = None
for tool in self.tools if isinstance(self.tools, (list, tuple)) else []:
    ...

if func is None:
    try:
        from ..tools.registry import get_registry
        registry = get_registry()
        func = registry.get(function_name)
    except ImportError:
        pass

if func is None:
    func = globals().get(function_name)
    if not func:
        import __main__
        func = getattr(__main__, function_name, None)
```

If a callable is found, it is executed directly:

```python
elif callable(func):
    casted_arguments = self._cast_arguments(func, arguments)
    return func(**casted_arguments)
```

The permission gate does not enforce a declared-tool allowlist by default. In [`[tool_execution.py](https://github.com/Users/shmulc/Documents/Codex/2026-05-03/please-go-over-tmp-tp-advisories/repos/PraisonAI/src/praisonai-agents/praisonaiagents/agent/tool_execution.py:550)`](/Users/shmulc/Documents/Codex/2026-05-03/please-go-over-tmp-tp-advisories/repos/PraisonAI/src/praisonai-agents/praisonaiagents/agent/tool_execution.py:550), execution is only rejected if `_perm_allow` is non-`None`:

```python
if self._perm_deny and function_name in self._perm_deny:
    return {"error": f"Tool '{function_name}' blocked by permission policy", "permission_denied": True}
if self._perm_allow is not None and function_name not in self._perm_allow:
    return {"error": f"Tool '{function_name}' not in allowed tools list", "permission_denied": True}
```

Default agent initialization sets `_perm_allow = None`, which means "allow all" rather than "allow only declared tools" in [`[agent.py](https://github.com/Users/shmulc/Documents/Codex/2026-05-03/please-go-over-tmp-tp-advisories/repos/PraisonAI/src/praisonai-agents/praisonaiagents/agent/agent.py:1749)`](/Users/shmulc/Documents/Codex/2026-05-03/please-go-over-tmp-tp-advisories/repos/PraisonAI/src/praisonai-agents/praisonaiagents/agent/agent.py:1749):

```python
self._perm_deny = frozenset()  # Permission tier deny set (empty = no denials)
self._perm_allow = None