Vulnerability · Published Aug 28, 2026 · Assigned by VulnCheck

CVE-2026-82278BISHENG Authenticated Arbitrary Python Code Execution via Workflow run_once

High 8.8

In plain English

A high-severity code injection in bisheng from dataelement. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.0%top 36.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

BISHENG before 2.6.0 contains a remote code execution vulnerability in the workflow run_once endpoint that allows authenticated users to execute arbitrary Python code. Attackers can submit crafted Code node definitions to the POST /api/v1/workflow/run_once endpoint, which executes them with exec() without sandboxing, gaining access to filesystem, credentials, and internal network resources.

Affected products (as reported)

Vendor	Product	Versions
dataelement	bisheng	0 – before 2.6.0

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

GitHub Issue #2189 issue-tracking
https://github.com/dataelement/bisheng product
Vulnerable code: workflow.py technical-description
VulnCheck Advisory: BISHENG Authenticated Arbitrary Python Code Execution via Workflow run_once third-party-advisory