GHSA-fvcw-9w9r-pxc7 — flowise
HIGHGHSA-fvcw-9w9r-pxc7 is a high-severity (CVSS 7.1) Server-Side Request Forgery (SSRF) vulnerability in flowise. A fix is available for flowise — see the affected versions and patch details below.
Flowise affected by Server-Side Request Forgery (SSRF) in HTTP Node Leading to Internal Network Access
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for GHSA-fvcw-9w9r-pxc7.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-fvcw-9w9r-pxc7 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 379,145 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
flowisenpmflowise-componentsnpmDescription
Description: Flowise exposes an HTTP Node in AgentFlow and Chatflow that performs server-side HTTP requests using user-controlled URLs. By default, there are no restrictions on target hosts, including private/internal IP ranges (RFC 1918), localhost, or cloud metadata endpoints. This enables Server-Side Request Forgery (SSRF), allowing any user interacting with a publicly exposed chatflow to force the Flowise server to make requests to internal network resources that are inaccessible from the public internet.
Impact includes:
- Access to internal admin panels (e.g., internal company dashboards, Jenkins, Kubernetes API, etc.).
- Retrieval of cloud provider metadata (e.g., AWS IMDSv1 at [http://169.254.169.254], GCP, Azure).
- Port scanning and enumeration of internal services.
- Potential lateral movement or privilege escalation in compromised environments.
This vulnerability is particularly severe because:
- Flowise instances are often deployed publicly without authentication (FLOWISE_USERNAME/PASSWORD not set by default).
- The HTTP Node is easily accessible in simple flows with minimal configuration.
Proof of Concept (PoC): A minimal flow consisting of three nodes demonstrates successful internal network access: Flow Structure: <img width="1131" height="323" alt="image" src="https://github.com/user-attachments/assets/f6ddc74f-3ae9-4376-995a-693fb272627a" /> HTTP Node Configuration: The HTTP Node is configured to perform a GET request to an internal address on localhost: URL: http://127.0.0.1:8000 (or any internal service) <img width="568" height="759" alt="image" src="https://github.com/user-attachments/assets/a5735e1f-f735-4d01-9d72-a772963254c8" />
Successful Response from Internal Service: When the flow is triggered via chat input, the Flowise server successfully retrieves and returns content from the internal mock server running on port 8000 within the same container/network: <img width="377" height="627" alt="image" src="https://github.com/user-attachments/assets/ff3fcfc6-4957-4aae-9c9d-13b4fca1d0ef" />
Impact This is a Server-Side Request Forgery (SSRF) vulnerability with both read and write capabilities. The HTTP Request node supports all standard HTTP methods (GET, POST, PUT, PATCH, DELETE), allowing attackers to not only retrieve sensitive information but also modify, create, or delete data on internal services if those services expose mutable endpoints:
- Read access: Retrieval of sensitive internal data, cloud provider metadata (e.g., AWS IAM credentials at http://169.254.169.254/latest/meta-data/iam/security-credentials/), secrets, configuration files, or database contents.
- Write access: Modification or deletion of internal resources via POST/PUT/PATCH/DELETE methods (e.g., creating malicious users/configurations, overwriting files, deleting data, triggering destructive actions on internal admin panels, CI/CD systems like Jenkins, Kubernetes APIs, or cloud management interfaces). Amplification: Retrieved cloud credentials can be used for further privilege escalation or lateral movement outside the n8n instance.
Suggested Long-term Fix (for Flowise):
- Add optional security controls to HTTP Node:
- Toggle: "Block private IP ranges and localhost" (enabled by default).
- Field: "Allowed domains" (whitelist).
- Display prominent warning when URL field uses template variables (e.g., {{ }}).
- Update documentation with explicit SSRF risks and best practices.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | flowise | all versions | 3.0.13npm install flowise@3.0.13 |
| 📦npm | flowise-components | all versions | 3.0.13npm install flowise-components@3.0.13 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flowise, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update flowise to 3.0.13 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fvcw-9w9r-pxc7 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-fvcw-9w9r-pxc7 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-fvcw-9w9r-pxc7. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-fvcw-9w9r-pxc7 in your dependencies?
O3 Security finds GHSA-fvcw-9w9r-pxc7 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.