Horizon Alert
Summary of the vulnerability and why it matters
A critical vulnerability in Flowise Cloud's account registration allows unauthenticated attackers to manipulate important ownership and access controls during user creation. This could disrupt trust and security in shared environments.
- Attackers can inject server-managed data.
- Affects multi-tenant organization access.
- Publicly reachable registration endpoint.
Attack Path
How an attacker could exploit the issue
An unauthenticated attacker can abuse Flowise's account registration to inject malicious data into server-managed fields. This allows them to manipulate ownership, timestamps, and organization roles, potentially compromising a multi-tenant environment.
- Attacker targets account registration endpoint.
- Unauthenticated remote access is required.
- Manipulation of ownership and roles is possible.
Live Threat
Current exploitation, exposure, and threat context
Attackers will likely target this vulnerability due to its critical severity and the absence of authentication requirements for exploitation. The improper mass assignment in the account registration endpoint allows for direct manipulation of sensitive ownership and organizational data, which can be attractive for account takeover or privilege escalation in multi-tenant environments. The fixed version is 3.1.0.
- Unauthenticated exploitation path.
- Critical impact on data integrity.
- Affects Flowise Cloud registration.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Prioritize patching Flowise to version 3.1.0 or later immediately, as this critical vulnerability allows unauthenticated attackers to inject server-managed fields during account creation, potentially compromising multi-tenant environments. If immediate patching is not feasible, isolate affected services to prevent further exploitation and implement strict network access controls.
- Patch Flowise to 3.1.0 or newer.
- Isolate or take services offline.
- Monitor for unauthorized account creations.
