GitHub Advisoryadvisory · PyPI

GHSA-x229-w2j4-h748 Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API

LOW Published 2026-05-05 Modified 2026-05-08 Official page ↗
Aliases
CVE-2026-7846
Ecosystem
PyPI
Packages
langchain-chatchat
Severity
Low
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-362
Reviewed
2026-05-08

Affected packages

• PyPI langchain-chatchat: <= 0.3.1.3 (no fix yet)

Description

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 to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Related

Alias · CVE (1)

  • CVE-2026-7846 A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. vulnerability

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References