CVE-2026-73486
Flowise before 3.1.3 Code Injection via CSV Agent customReadCSV
- State
- Published
- Severity
- 9.0 Critical
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Reserved
- Aug 12, 2026
Description
Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter that allows authenticated attackers to execute arbitrary Python code. The validator uses a static regex blocklist that can be bypassed through obfuscation techniques, enabling attackers to execute code in the unsandboxed pyodide environment with full system access.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.0 Critical | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | VulnCheck |
Weaknesses
- CWE-94 Improper Control of Generation of Code ('Code Injection')
Affected Products
| Product | Versions |
|---|---|
FlowiseFlowiseAI |
|
FlowiseFlowiseAI |
|
References
- GitHub Security Advisory (GHSA-4878-cqgq-j53v)vendor-advisory
- VulnCheck Advisory: Flowise before 3.1.3 Code Injection via CSV Agent customReadCSVthird-party-advisory
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