RCE in Dataelement Bisheng
CVE-2026-82278
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (53.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/dataelement/bisheng/issues/2189 (issue-tracking)
- github.com/dataelement/bisheng (product)
- github.com/dataelement/bisheng/blob/v2.4.0/src/backend/bisheng/api/services/wor… (technical-description)
- www.vulncheck.com/advisories/bisheng-authenticated-arbitrary-python-code-execut… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82278?
- CVE-2026-82278 is a high-severity vulnerability in Dataelement Bisheng, classified under Code Injection. CVSS score: 8.8/10. Published 2026-08-28.
- How severe is CVE-2026-82278?
- High severity. CVSS v3 base score is 8.8 out of 10.