CVE-2026-7844: medium-severity vulnerability in chatchat-space Langchain-Chatchat
chatchat-space Langchain-Chatchat Compatible File Service openai_routes.py delete_file missing authentication
Published · Updated
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.3%
A vulnerability was detected in chatchat-space Langchain-Chatchat up to 0.3.1.3. This vulnerability affects the function files/list_files/retrieve_file/retrieve_file_content/delete_file of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component Compatible File Service. The manipulation results in missing authentication. The attacker must have access to the local network to execute the attack. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
chatchat-space · Langchain-Chatchatpublic PoCs found — 1
cve_referencegithub.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-4-Missing-Auth-File-Endpoints.mdunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — chatchat-space Langchain-Chatchat
In the same product, most dangerous first.
CVE-2026-75128CRITICALLangchain-Chatchat through 0.3.1.3 Unauthenticated RCE via /tools/call EndpointEPSS 2.2%CVE-2025-6853MEDIUMchatchat-space Langchain-Chatchat Backend upload_temp_docs path traversalEPSS 0.6%CVE-2025-6855MEDIUMchatchat-space Langchain-Chatchat file path traversalEPSS 0.6%CVE-2025-6854MEDIUMchatchat-space Langchain-Chatchat files path traversalEPSS 0.6%CVE-2026-7847LOWchatchat-space Langchain-Chatchat Uploaded File openai_routes.py _get_file_id random valuesEPSS 0.2%CVE-2026-7846LOWchatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctouEPSS 0.2%
References
https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-4-Missing-Auth-File-Endpoints.mdhttps://github.com/chatchat-space/Langchain-Chatchat/https://github.com/chatchat-space/Langchain-Chatchat/issues/5465https://vuldb.com/submit/807790https://vuldb.com/vuln/361123https://vuldb.com/vuln/361123/cti