---
title: "CVE-2026-51860: Bisheng - Directory Traversal"
description: "Bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 contain a directory traversal vulnerability caused by improper input validation in src/backend/bisheng/linsight/domain/task_exec.py, letting attackers access arbitrary files, exploit requires crafted input."
url: https://panop.io/threat-heartbeat/CVE-2026-51860/
---

# CVE-2026-51860 Bisheng - Directory Traversal

Bisheng 2.3.0, 2.4.0, and 2.4.0-beta1 contain a directory traversal vulnerability caused by improper input validation in src/backend/bisheng/linsight/domain/task\_exec.py, letting attackers access arbitrary files, exploit requires crafted input.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.59% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-51860)

## Details

Type

Directory Traversal

Impact

File System Read, Information Disclosure

CVSS vector

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

Published

30 September 2026

Updated

15 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Update to the latest version of Bisheng.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-51860](https://nvd.nist.gov/vuln/detail/CVE-2026-51860)
- [https://gist.github.com/Ro1ME/e4129afdd9af2ff1bdcecf27ec5098cf](https://gist.github.com/Ro1ME/e4129afdd9af2ff1bdcecf27ec5098cf)
- [https://github.com/dataelement/bisheng/issues/1994](https://github.com/dataelement/bisheng/issues/1994)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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