Horizon Alert
Summary of the vulnerability and why it matters
This advisory details a critical vulnerability in Flowise, a tool for building large language model flows. The issue lies in how the `checkBasicAuth` endpoint handles credentials, allowing for plaintext validation without sufficient protection. This could allow unauthorized access and manipulation of custom AI workflows.
- Plaintext credentials without checks.
- Protects custom AI workflow designs.
- Confirm relevance and exposure.
Attack Path
How an attacker could exploit the issue
An attacker could reach the vulnerable component by accessing the Flowise application over the network. The `checkBasicAuth` endpoint is exposed and handles authentication credentials insecurely. This could allow an attacker to gain unauthorized access to the application's functionalities.
- No special access needed.
- Plaintext credential checks.
- Unauthorized access risk.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could expose the credentials used to authenticate with Flowise when the `checkBasicAuth` endpoint is accessed. Attackers could potentially gain unauthorized access to Flowise instances due to the plaintext credential validation and lack of rate limiting.
- Flowise authentication credentials.
- Plaintext validation without rate limiting.
- Unauthorized access to Flowise instances.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Application owners are primarily responsible for addressing this vulnerability in Flowise, as it directly impacts the custom large language model flows they build and manage. The first practical step is to locate all instances of Flowise within your environment, determine their reachability and criticality to business operations, identify the specific application owner for each instance, and then prioritize remediation efforts based on identified risks.
- Application owners must address this.
- Verify Flowise instances and their reachability.
- Plan risk-based remediation or upgrade.
