CVE-2026-73486

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.

CVSS 4.0

9.0CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-25)

CWE

CWE-94

Published

2026-08-13

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• flowiseai:flowise

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

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