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archive/Patch now/AIR-2025-0350
closedclosed 6 Oct 2025Patch now2 Disclosed vulnerabilityAI

CVE-2025-55346: Flowise vulnerable to RCE via Dynamic function constructor injection

Flowise

Flowise allows remote code execution because user-controlled input flows unsafely to a dynamic Function constructor during custom MCP configuration. This vulnerability lets malicious actors run arbitrary JavaScript code in the host context.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
9.8
EPSS
0.24 · top 3% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
6 Oct 2025
last update
6 Oct 2025
CVE ids
CVE-2025-55346other records

Timeline · 1

  1. 6 Oct 2025CVE-2025-55346: Flowise vulnerable to RCE via Dynamic function constructor injection

Sources · 1

Advisories and databases

  1. 2025-10-06
    CVE-2025-55346: Flowise vulnerable to RCE via Dynamic function constructor injection
    GitHub Advisory Database · github.com/advisories/GHSA-hmgh-466j-fx4c

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
rcemcp
dates
happened 6 Oct 2025 · first reported 6 Oct 2025
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

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the brief as text
# CVE-2025-55346: Flowise vulnerable to RCE via Dynamic function constructor injection

https://gcdradar.vercel.app/incidents/cve-2025-55346-flowise-vulnerable-to-rce-via-dynamic-functio · AIR-2025-0350 · closed 2025-10-06

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2025-10-06
- AI role: Attack on AI
- Products: Flowise
- CVE ids: CVE-2025-55346
- CVSS: 9.8

## Summary

Flowise allows remote code execution because user-controlled input flows unsafely to a dynamic Function constructor during custom MCP configuration. This vulnerability lets malicious actors run arbitrary JavaScript code in the host context.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2025-10-06: CVE-2025-55346: Flowise vulnerable to RCE via Dynamic function constructor injection (https://github.com/advisories/GHSA-hmgh-466j-fx4c)

## Sources

- 2025-10-06 GitHub Advisory Database: CVE-2025-55346: Flowise vulnerable to RCE via Dynamic function constructor injection https://github.com/advisories/GHSA-hmgh-466j-fx4c

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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