Race Condition Affecting langchain-chatchat package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-LANGCHAINCHATCHAT-16635562
- published11 May 2026
- disclosed5 May 2026
- creditDem00
Introduced: 5 May 2026
NewCVE-2026-7846 (opens in a new tab)How to fix?
There is no fixed version for langchain-chatchat.
Overview
langchain-chatchat is a Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Llama) RAG and Agent app with langchain
Affected versions of this package are vulnerable to Race Condition through a race condition in the files function of the OpenAI-Compatible File Upload API. An attacker can overwrite files by manipulating the file.filename argument during concurrent upload requests. This is only exploitable if the attacker has access to the local network and can perform simultaneous file uploads.