CVE-2026-82278
BISHENG Authenticated Arbitrary Python Code Execution via Workflow run_once
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | dataelement |
| Product | bisheng |
| Published | Aug 28, 2026 |
| Last Updated | Aug 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
dataelement / bisheng
0 < 2.6.0
References
github.com: https://github.com/dataelement/bisheng/issues/2189 github.com: https://github.com/dataelement/bisheng github.com: https://github.com/dataelement/bisheng/blob/v2.4.0/src/backend/bisheng/api/services/workflow.py vulncheck.com: https://www.vulncheck.com/advisories/bisheng-authenticated-arbitrary-python-code-execution-via-workflow-run-once
Credits
🔍 George Chen