EUVD-2026-91123

The OpenAI-compatible file upload endpoint /v1/files in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An attacker can write files to arbitrary locations outside the openaifiles directory by crafting malicious filenames...

EUVD-2026-91122

The knowledge base creation and document upload interfaces in Langchain-Chatchat 0.3.0;0.3.1 is vulnerable to path traversal. An attacker can inject path traversal sequences such as ..\ into the knowledgebasename parameter to write knowledge base content to arbitrary locations outside the...

EUVD-2026-91121

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...

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...

CVE-2026-51883

The knowledge base creation and document upload interfaces in Langchain-Chatchat 0.3.0;0.3.1 is vulnerable to path traversal. An attacker can inject path traversal sequences such as ..\ into the knowledgebasename parameter to write knowledge base content to arbitrary locations outside the...

CVE-2026-51882

The OpenAI-compatible file upload endpoint /v1/files in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An attacker can write files to arbitrary locations outside the openaifiles directory by crafting malicious filenames...

CVE-2026-51883

The Langchain-Chatchat software versions 0.3.0 and 0.3.1 are vulnerable to a path traversal vulnerability in the knowledge base creation and document upload interfaces. An attacker can exploit this by injecting path traversal sequences, such as ..\, into the knowledge_base_name parameter. This al...

CVE-2026-51882

The Langchain-Chatchat version 0.3.0 is vulnerable to a path traversal flaw in its OpenAI-compatible file upload endpoint, /v1/files. An attacker can exploit this by crafting malicious filenames to write files to arbitrary locations outside the designated openai_files directory. This vulnerabilit...

CVE-2026-51884

The Langchain Chatchat 0.3.1 application is vulnerable to a path traversal flaw in its /knowledge_base/upload_temp_docs endpoint. An attacker can craft malicious filenames to bypass intended directory restrictions and write files to arbitrary locations on the server. A sighting of this vulnerabil...

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-2026-2558 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 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...

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...

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 ...

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...

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 ...

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...