Flowise 3.0.4 Vulnerable to Critical Remote Code Execution (RCE) Exploit
Security researchers disclose a severe RCE vulnerability in Flowise 3.0.4, enabling unauthenticated attackers to execute arbitrary code. Patch immediately.
Critical RCE Vulnerability Discovered in Flowise 3.0.4
Security researchers have identified a severe remote code execution (RCE) vulnerability in Flowise 3.0.4, an open-source low-code tool for building large language model (LLM) applications. The flaw, tracked under CVE-2024-XXXX (pending assignment), allows unauthenticated attackers to execute arbitrary code on vulnerable systems, posing a significant risk to organizations deploying the software.
Technical Details
The vulnerability stems from improper input validation in Flowise’s API endpoints, enabling attackers to inject malicious payloads. Exploit code (Exploit-DB ID: 52440) has been published, demonstrating how unauthenticated users can trigger RCE by sending crafted HTTP requests. The issue affects Flowise versions up to and including 3.0.4, with no known mitigations other than upgrading.
Key technical aspects:
- Attack Vector: Unauthenticated remote exploitation via API abuse
- Impact: Full system compromise, including data theft or lateral movement
- Exploit Availability: Public proof-of-concept (PoC) code released
- Affected Component: Flowise API server (default port: 3000)
Impact Analysis
Organizations using Flowise 3.0.4 for LLM workflows face critical risks, including:
- Unauthorized System Access: Attackers can gain control of the host machine
- Data Breaches: Sensitive LLM training data or proprietary workflows may be exfiltrated
- Supply Chain Attacks: Compromised Flowise instances could serve as entry points for broader network infiltration
The public availability of exploit code heightens the urgency, as threat actors may weaponize the flaw before patches are applied.
Recommendations
- Immediate Action: Upgrade to the latest Flowise version (if available) or apply vendor-supplied patches.
- Network Segmentation: Isolate Flowise instances from critical internal systems until remediated.
- Monitoring: Deploy intrusion detection systems (IDS) to detect exploitation attempts targeting port 3000.
- Access Controls: Restrict API access to trusted IPs and enforce authentication requirements.
Security teams should prioritize this vulnerability due to its low attack complexity and high impact. Follow Flowise’s official security advisories for updates on patches and mitigation guidance.