High severity8.8NVD Advisory· Published Aug 13, 2026· Updated Sep 3, 2026
CVE-2026-73486
CVE-2026-73486
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
2- github.com/FlowiseAI/Flowise/security/advisories/GHSA-4878-cqgq-j53vnvdExploitVendor Advisory
- www.vulncheck.com/advisories/flowise-before-code-injection-via-csv-agent-customreadcsvnvdThird Party Advisory
News mentions
2- ⚡ Weekly Recap: Chinese Spy Proxy, AI Agents Go Off-Task, Router Backdoors and MoreThe Hacker News · Aug 31, 2026
- Flowise: Ten RCE and Data Exposure Vulnerabilities Disclosed TogetherVypr Intelligence · Aug 13, 2026