CVE-2025-7166: Responsive Blog Site SQLi Vulnerability

CVE-2025-7166 Overview

CVE-2025-7166 is a SQL injection vulnerability in code-projects Responsive Blog Site 1.0, developed by Fabian. The flaw resides in the /single.php file, where the ID parameter is passed directly into a backend SQL query without proper sanitization. Attackers can manipulate the ID argument to inject arbitrary SQL statements. The vulnerability is remotely exploitable over the network and requires only low-level privileges. Public disclosure of the exploit details has occurred through VulDB and a GitHub issue tracker, increasing the likelihood of opportunistic abuse against exposed deployments. The weakness is classified under [CWE-74] (Improper Neutralization of Special Elements in Output).

Critical Impact
Remote attackers can extract, modify, or delete database contents in Responsive Blog Site 1.0 by injecting SQL payloads through the ID parameter in /single.php.

Affected Products

Fabian Responsive Blog Site 1.0
CPE: cpe:2.3:a:fabian:responsive_blog_site:1.0:*:*:*:*:*:*:*
Component: fabian:responsive_blog_site

Discovery Timeline

2025-07-08 - CVE-2025-7166 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-7166

Vulnerability Analysis

The vulnerability exists in the /single.php endpoint of Responsive Blog Site 1.0. This script accepts an ID parameter through an HTTP request and passes the value into a SQL query used to retrieve a blog post. The application fails to validate, sanitize, or parameterize this input. As a result, attacker-supplied SQL syntax is concatenated directly into the executing statement.

Exploitation requires no user interaction beyond issuing a crafted HTTP request. The attacker needs only low-level access, such as a standard authenticated session or any state the application treats as a non-administrative user. Successful injection allows query manipulation against the underlying database, including data exfiltration, authentication bypass through UNION-based payloads, and modification of stored content. According to the CVSS 4.0 vector, confidentiality, integrity, and availability impacts on the vulnerable system are each rated as low.

Root Cause

The root cause is improper neutralization of special elements in a SQL command [CWE-74], specifically the failure to use prepared statements or input validation for the ID parameter handled by /single.php. User-controlled data flows into a SQL string concatenation pattern that is interpreted by the database engine without separation between code and data.

Attack Vector

An attacker sends an HTTP GET or POST request to /single.php with a crafted ID value containing SQL metacharacters such as single quotes, comment tokens, or UNION SELECT clauses. The injected payload alters the original query, causing the database to return attacker-chosen rows or to execute supplementary statements. Because the attack is remote and reachable over standard HTTP, any internet-exposed instance of Responsive Blog Site 1.0 is reachable to opportunistic scanners. The exploit has been disclosed publicly, as referenced in the GitHub CVE Issue #7 and VulDB #315105 entries.

Detection Methods for CVE-2025-7166

Indicators of Compromise

HTTP requests to /single.php containing SQL metacharacters such as ', ", --, /*, UNION, SELECT, or SLEEP( in the ID parameter.
Unusual database error messages returned to clients accessing /single.php.
Spikes in request volume targeting /single.php?ID= from a single source address.
Outbound database queries with abnormally long execution times indicating time-based injection probing.

Detection Strategies

Deploy Web Application Firewall (WAF) signatures that flag SQL injection patterns in query parameters, particularly targeting /single.php.
Enable database query logging and alert on syntactically anomalous queries that include user-supplied tokens such as OR 1=1 or stacked statements.
Correlate web server access logs with database audit logs to identify reconnaissance patterns consistent with SQLi enumeration.

Monitoring Recommendations

Continuously monitor HTTP request logs for the /single.php endpoint and inspect the ID parameter for non-numeric values when an integer is expected.
Alert on HTTP 500 responses originating from /single.php, which often indicate failed injection attempts that leak SQL errors.
Track repeated requests from the same source IP that iterate through encoded payload variants.

How to Mitigate CVE-2025-7166

Immediate Actions Required

Restrict public access to Responsive Blog Site 1.0 instances until a remediation is applied, using network ACLs or authentication proxies.
Deploy WAF rules to block requests to /single.php containing SQL metacharacters or non-integer values in the ID parameter.
Audit the database service account used by the application and revoke any privileges not required for read operations on blog content.
Review web server and database logs for prior exploitation attempts referencing /single.php.

Patch Information

No vendor-supplied patch is currently referenced in the public advisories for Responsive Blog Site 1.0. Administrators should consult the Code Projects Resource Hub for updates and review the VulDB advisory #315105 for remediation status. Until an official fix is released, source-level mitigations are required.

Workarounds

Modify /single.php to use parameterized queries or prepared statements when constructing SQL involving the ID argument.
Cast the ID parameter to an integer at the application layer before incorporating it into any query, rejecting non-numeric input.
Apply least-privilege database credentials so that the web application cannot execute schema modifications or access tables outside the blog scope.
Disable verbose database error reporting to prevent information leakage that aids injection refinement.

bash

# Configuration example - illustrative input validation snippet
# Reject non-numeric ID values at the web tier (PHP)
# if (!ctype_digit($_GET['ID'])) { http_response_code(400); exit; }
# $stmt = $pdo->prepare('SELECT * FROM posts WHERE id = :id');
# $stmt->execute([':id' => (int)$_GET['ID']]);