Overview
The Common Vulnerabilities and Exposures (CVE) system has recently identified a critical SQL Injection vulnerability, labeled CVE-2025-39377, in the weDevs Appsero Helper. This vulnerability is particularly concerning due to the potential for system compromise and data leakage. SQL Injection is a code injection technique that attackers can use to manipulate the database query, often leading to unauthorized access to sensitive data. Given the wide usage of weDevs Appsero Helper, the vulnerability could potentially impact a large number of users and systems.
Vulnerability Summary
CVE ID: CVE-2025-39377
Severity: High (8.5 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Unauthorized system access and potential data leakage
Affected Products
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Product | Affected Versions
weDevs Appsero Helper | n/a – 1.3.4
How the Exploit Works
The SQL injection vulnerability in weDevs Appsero Helper, as described by the CVE-2025-39377, occurs due to improper neutralization of special elements used in an SQL command. This allows an attacker to inject malicious SQL commands via user input fields that are incorporated into SQL queries without proper sanitization. Successful exploitation of this vulnerability could allow an attacker to access, modify, or delete data, or even execute administrative operations on the database.
Conceptual Example Code
The vulnerability might be exploited in the following conceptual example:
POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "userInput": "'; DROP TABLE users; --" }In this example, the attacker sends a JSON payload containing a malicious SQL command. The command is crafted in such a way that it ends the current SQL statement, then adds a new one (`DROP TABLE users`) that deletes the ‘users’ table. The `–` at the end is a SQL comment that effectively ignores the rest of the original SQL statement.
Prevention and Mitigation
To mitigate this vulnerability, users are advised to apply vendor patches as soon as they become available. In the interim, a web application firewall (WAF) or intrusion detection/prevention system (IDS/IPS) can provide temporary mitigation by detecting and blocking SQL injection attempts. Additionally, it is crucial to follow best practices for secure coding, such as using parameterized queries or prepared statements to prevent SQL injection.