CVE-2026-73486

EUVD-2026-57802
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.
Code Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 49.65%
Affected Products (NVD)
VendorProductVersion
flowiseaiflowise
𝑥
< 3.1.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-4878-cqgq-j53v
https://www.vulncheck.com/advisories/flowise-before-code-injection-via-csv-agent-customreadcsv
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-4878-cqgq-j53v