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CVE-2026-7844— chatchat-space Langchain-Chatchat Compatible File Service openai_routes.py delete_file missing authentication

Quick assessment

Affected
chatchat-space Langchain-Chatchat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LangChain-Chatchat是Chatchat-Space开源的一个基于LangChain框架开发的聊天机器人软件。 Langchain-Chatchat 0.3.1.3及之前版本存在授权问题漏洞，该漏洞源于Compatible File Service组件中文件libs/chatchat-server/chatchat/server/api_server/openai_routes.py的函数files/list_files/retrieve_file/retrieve_file_content

CVSS 6.3 · Medium EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
chatchat-space Langchain-Chatchat 0.3.1.0 affected
0.3.1.1 affected
0.3.1.2 affected
0.3.1.3 affected
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I. Basic Information for CVE-2026-7844

Vulnerability Information
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Vulnerability Title
chatchat-space Langchain-Chatchat Compatible File Service openai_routes.py delete_file missing authentication
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
LangChain-Chatchat 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LangChain-Chatchat是Chatchat-Space开源的一个基于LangChain框架开发的聊天机器人软件。 Langchain-Chatchat 0.3.1.3及之前版本存在授权问题漏洞，该漏洞源于Compatible File Service组件中文件libs/chatchat-server/chatchat/server/api_server/openai_routes.py的函数files/list_files/retrieve_file/retrieve_file_content
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
chatchat-space Langchain-Chatchat 0.3.1.0 -

II. Public POCs for CVE-2026-7844

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III. Intelligence Information for CVE-2026-7844

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Proof of Concept for CVE-2026-7844 (1)

News Coverage for CVE-2026-7844 (1)

Vendor Pages for CVE-2026-7844 (1)

Same Patch Batch · chatchat-space · 2026-05-05 · 4 CVEs total

CVE-2026-7846 2.6 LOW chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files
CVE-2026-7845 2.6 LOW chatchat-space Langchain-Chatchat Vision Chat Paste Image dialogue.py PIL.Image.tobytes we
CVE-2026-7847 2.6 LOW chatchat-space Langchain-Chatchat Uploaded File openai_routes.py _get_file_id random value

IV. Related Vulnerabilities

Same product: Langchain-Chatchat
Same vendor: chatchat-space
Same weakness: CWE-306

V. Comments for CVE-2026-7844

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