What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-09-23
• Weakness: CWE-94

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

• dataelement bisheng: before 2.6.0 — fixed in 2.6.0

How to fix

Upgrade to a fixed version: dataelement bisheng 2.6.0. Check the vendor advisory for mitigations.

References

• https://github.com/dataelement/bisheng
• https://github.com/dataelement/bisheng/blob/v2.4.0/src/backend/bisheng/api/services/workflow.py
• https://github.com/dataelement/bisheng/issues/2189
• https://www.vulncheck.com/advisories/bisheng-authenticated-arbitrary-python-code-execution-via-workflow-run-once
• https://github.com/dataelement/bisheng/issues/2189

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