---
id: CVE-2026-51859
title: >-
  bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 is vulnerable to directory traversal in
  save_download_file (src/backend/bisheng/core/cache/utils.py:290).
summary: >-
  bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 is vulnerable to directory traversal in
  save_download_file (src/backend/bisheng/core/cache/utils.py:290).
severity: none
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T21:17:11.893'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-51859'
references:
  - url: 'https://gist.github.com/Ro1ME/df160925a60dd917550f7c87bfe62519'
    label: cve@mitre.org
  - url: 'https://github.com/dataelement/bisheng/issues/1994'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T21:25:07.843Z'
---

## Overview

bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 is vulnerable to directory traversal in save_download_file (src/backend/bisheng/core/cache/utils.py:290).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.