| Titel | aiwaves-cn agents latest Uncontrolled Resource Consumption (CWE-400) |
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| Beschreibung | # Technical Details
An Unauthenticated Denial of Service (DoS) vulnerability exists in the `recall_relevant_memories_to_working_memory` method in `core/cat/looking_glass/stray_cat.py` of agents (cheshire_cat_core).
The application fails to truncate or limit the size of incoming user message payloads (`user_message_json.text`) before passing them to the underlying `tiktoken` encoding function.
# Vulnerable Code
File: `core/cat/looking_glass/stray_cat.py`
Method: `recall_relevant_memories_to_working_memory`
Why: The `tiktoken` library (written in Rust) imposes a stack depth limit. When given an excessively large string, it panics with a `StackOverflow`, issuing a fatal exception that terminates the Python FastAPI worker process serving the request.
# Reproduction
1. Start the core application on its default port (1865).
2. Construct a malicious JSON payload with 5,000,000 characters (`"A" * 5_000_000`).
3. Send it to the `/message` endpoint via a standard HTTP POST request.
4. Observe the server drop the connection, return a 500 Internal Server Error, and the worker process fatally crash.
# Impact
- Complete Denial of Service (DoS).
- Prolonged application downtime through continuous worker termination or resource exhaustion. |
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| Quelle | ⚠️ https://github.com/aiwaves-cn/agents/issues/219 |
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| Benutzer | Eric-b (UID 96354) |
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| Einreichung | 23.04.2026 09:44 (vor 1 Monat) |
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| Moderieren | 11.05.2026 15:18 (18 days later) |
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| Status | Akzeptiert |
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| VulDB Eintrag | 362606 [aiwaves-cn agents bis e8c4e3c2d19739d3dff59e577d1c97090cc15f59 cheshire_cat_core stray_cat.py recall_relevant_memories_to_working_memory Denial of Service] |
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| Punkte | 20 |
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