Overview
A recent vulnerability, identified as CVE-2025-48757, has been discovered in the Lovable software system. This severe security flaw has the potential to affect a large number of users as it pertains to database security, a critical component of any information system. The vulnerability stems from an insufficient database Row-Level Security (RLS) policy, which leaves generated sites vulnerable to remote unauthenticated attacks. This vulnerability is particularly alarming as it allows unauthorized users to read or write to arbitrary database tables, posing a significant risk of system compromise and data leakage.
Vulnerability Summary
CVE ID: CVE-2025-48757
Severity: Critical (9.3 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Lovable | All versions up to 2025-04-15
How the Exploit Works
The exploit leverages the insufficient Row-Level Security (RLS) policy in Lovable. RLS is a security feature that controls access to rows in a database table based on the characteristics of the user performing a query. However, due to the vulnerability in Lovable, an attacker can bypass these security controls. This allows a remote, unauthenticated attacker to send specially-crafted requests that read or write to arbitrary database tables of generated sites, potentially leading to unauthorized access to sensitive information or even total system compromise.
Conceptual Example Code
The following is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request that an attacker might use:
GET /database_query HTTP/1.1
Host: vulnerable_site.com
Content-Type: application/json
{ "table_name": "users", "columns": "*" }In this example, the attacker sends a GET request to a vulnerable endpoint on the target site. The attacker specifies the table name and columns they wish to access, effectively bypassing the insufficient RLS policy and gaining access to sensitive information.
Mitigation Guidance
Users are advised to apply the vendor-provided patch immediately. This patch addresses the RLS policy insufficiency and prevents remote unauthenticated attackers from gaining access to arbitrary database tables. As a temporary mitigation measure, users can also employ a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to identify and block potentially malicious requests. However, these measures should not replace the application of the official patch.
In conclusion, CVE-2025-48757 is a serious security flaw that can lead to significant system compromise and data leakage. By understanding the nature of this vulnerability and taking the necessary measures to mitigate the risks, users can ensure their systems remain secure.