Answer in brief
CVE-2025-71336 records a Critical severity (CVSS 9.3) vulnerability in Flowise - Unsandboxed Remote Code Execution via Custom MCP. The current sources do not mark it as known exploited. The current feed maps Flowise/Flowise (generic), flowise (npm), flowise (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Flowise/Flowise (generic), flowise (npm), flowise (npm). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Flowise/Flowisegeneric | >=0 <3.0.6 | 3.0.6 |
| flowisenpm | >=2.2.7-patch.1,<3.0.6 | 3.0.6 |
| flowisenpm | >=2.2.7-patch.1 <3.0.6 | 3.0.6 |
Published upstream
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
Flowise before 3.0.6 (affected versions 2.2.7-patch.1 and earlier) contains an unsandboxed remote code execution vulnerability in the Custom MCP feature, which is designed to execute OS commands such as launching local MCP servers. Because Flowise's authentication and authorization model is minimal and lacks role-based access control, and the default installation runs without authentication unless FLOWISE_USERNAME and FLOWISE_PASSWORD are set, an attacker can send a crafted JSON payload with the header 'x-request-from: internal' to the /api/v1/node-load-method/customMCP endpoint to execute arbitrary OS commands, resulting in complete compromise of the platform container or server.
Quoted source text, attributed separately from HOL analysis.