CVE-2025-6853Medium· 6.3▾ SunlitLangchain-Chatchat has a Path Traversal vulnerability
▾ Sunlit zone — Low / medium · no exploitation signal
impact 34.7 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.5%
0.5% → 0.5%
A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function upload_temp_docs of the file /knowledge_base/upload_temp_docs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
langchain-chatchat <= 0.3.1.3Refer to the advisory for the patched release.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-7846Low· 2.6Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API
CVE-2026-7845Low· 2.6Langchain-Chatchat Uses a Broken or Risky Cryptographic Algorithm
CVE-2026-7847Low· 2.6Langchain-Chatchat Uses Insufficiently Random Values
CVE-2025-6855Medium· 5.5Langchain-Chatchat vulnerable to path traversal
CVE-2025-6854Medium· 4.3Langchain-Chatchat vulnerable to path traversal