CVE-2026-51882

CriticalCVSS 9.1/10Last modified Oct 7, 2026

Description

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 `openai_files` directory by crafting malicious filenames.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-22

Affected software

No affected versions have been published.

Timeline

Published: Oct 1, 2026
Last modified: Oct 7, 2026
NVD status: Deferred

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