CVE-2026-51884

The /knowledgebase/uploadtempdocs temporary document upload endpoint in Langchain Chatchat 0.3.1 is vulnerable to path traversal. By crafting malicious filenames, an attacker can write files to arbitrary locations on the server, bypassing the intended restrictions on the temporary directory...

PYSEC-2026-2557 Langchain-Chatchat Uses Insufficiently Random Values

A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function getfileid of the file libs/chatchat-server/chatchat/server/apiserver/openairoutes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently rando...

Langchain-Chatchat Uses Insufficiently Random Values

A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function getfileid of the file libs/chatchat-server/chatchat/server/apiserver/openairoutes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently rando...

PYSEC-2026-2559 Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API

A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/apiserver/openairoutes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to...

PYSEC-2026-2558 Langchain-Chatchat Uses a Broken or Risky Cryptographic Algorithm

A flaw has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. This issue affects the function PIL.Image.tobytes of the file libs/chatchat-server/chatchat/webuipages/dialogue/dialogue.py of the component Vision Chat Paste Image Handler. This manipulation of the argument...

Langchain-Chatchat Uses a Broken or Risky Cryptographic Algorithm

A flaw has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. This issue affects the function PIL.Image.tobytes of the file libs/chatchat-server/chatchat/webuipages/dialogue/dialogue.py of the component Vision Chat Paste Image Handler. This manipulation of the argument...

Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API

A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/apiserver/openairoutes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to...

PT-2026-59215

A flaw has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. This issue affects the function PIL.Image.tobytes of the file libs/chatchat-server/chatchat/webui pages/dialogue/dialogue.py of the component Vision Chat Paste Image Handler. This manipulation of the argument paste...

PT-2026-59214

A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function get file id of the file libs/chatchat-server/chatchat/server/api server/openai routes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently...

PT-2026-59216

A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api server/openai routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads ...

Langchain-Chatchat vulnerable to path traversal

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may ...

Langchain-Chatchat vulnerable to path traversal

A vulnerability classified as problematic was found in chatchat-space Langchain-Chatchat up to 0.3.1. This vulnerability affects unknown code of the file /v1/files?purpose=assistants. The manipulation leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to...

PYSEC-2026-1511 Langchain-Chatchat vulnerable to path traversal

A vulnerability classified as problematic was found in chatchat-space Langchain-Chatchat up to 0.3.1. This vulnerability affects unknown code of the file /v1/files?purpose=assistants. The manipulation leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to...

PYSEC-2026-1512 Langchain-Chatchat vulnerable to path traversal

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may ...

PYSEC-2026-1513 Langchain-Chatchat has a Path Traversal vulnerability

A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function uploadtempdocs of the file /knowledgebase/uploadtempdocs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to...

Langchain-Chatchat has a Path Traversal vulnerability

A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function uploadtempdocs of the file /knowledgebase/uploadtempdocs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to...

CVE-2026-7846

A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/apiserver/openairoutes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to...

CVE-2026-30617

LangChain-ChatChat 0.3.1 contains a remote code execution vulnerability in its MCP STDIO server configuration and execution handling. A remote attacker can access the publicly exposed MCP management interface and configure an MCP STDIO server with attacker-controlled commands and arguments. When...

CVE-2026-7844

A vulnerability was detected in chatchat-space Langchain-Chatchat up to 0.3.1.3. This vulnerability affects the function files/listfiles/retrievefile/retrievefilecontent/deletefile of the file libs/chatchat-server/chatchat/server/apiserver/openairoutes.py of the component Compatible File Service...

EUVD-2026-27408

A vulnerability was found in chatchat-space Langchain-Chatchat up to 0.3.1.3. The affected element is the function getfileid of the file libs/chatchat-server/chatchat/server/apiserver/openairoutes.py of the component Uploaded File Handler. Performing a manipulation results in insufficiently rando...