Attacker Impact
An attacker can gain unauthorized access to sensitive user data, modify database records, or hijack infrastructure by exploiting common oversights in MVP deployments. This includes accessing cross-tenant data due to missing access controls [S4] or using leaked API keys to incur costs and exfiltrate data from integrated services [S2].
Root Cause
In the rush to launch an MVP, developers—especially those using AI-assisted "vibe coding"—frequently overlook foundational security configurations. The primary drivers of these vulnerabilities are:
- Secret Leakage: Credentials, such as database strings or AI provider keys, are accidentally committed to version control [S2].
- Broken Access Control: Applications fail to enforce strict authorization boundaries, allowing users to access resources belonging to others [S4].
- Permissive Database Policies: In modern BaaS (Backend-as-a-Service) setups like Supabase, failing to enable and correctly configure Row Level Security (RLS) leaves the database open to direct exploitation via client-side libraries [S5].
- Weak Token Management: Improper handling of authentication tokens can lead to session hijacking or unauthorized API access [S3].
Concrete Fixes
Implement Row Level Security (RLS)
For applications using Postgres-based backends like Supabase, RLS must be enabled on every table. RLS ensures that the database engine itself enforces access constraints, preventing a user from querying another user's data even if they have a valid authentication token [S5].
Automate Secret Scanning
Integrate secret scanning into the development workflow to detect and block the push of sensitive credentials like API keys or certificates [S2]. If a secret is leaked, it must be revoked and rotated immediately, as it should be considered compromised [S2].
Enforce Strict Token Practices
Follow industry standards for token security, including using secure, HTTP-only cookies for session management and ensuring tokens are sender-constrained where possible to prevent reuse by attackers [S3].
Apply General Web Security Headers
Ensure the application implements standard web security measures, such as Content Security Policy (CSP) and secure transport protocols, to mitigate common browser-based attacks [S1].
How FixVibe tests for it
FixVibe's read-only BaaS scans flag Supabase tables and Storage buckets that anonymous users can read, its GitHub repo scans flag tables created without row level security, and its passive scans flag leaked client-side credentials, missing security headers and weak auth-cookie flags. Verified active scans also test for IDOR and cross-tenant data exposure on domains you own.