CVE-2026-86168: CMS 1.0 SQL Injection Vulnerability

CVE-2026-86168 Overview

CVE-2026-86168 is a SQL injection vulnerability affecting code-projects Content Management System 1.0. The flaw resides in the /login.php endpoint, where the user_name parameter is passed to a database query without proper sanitization. Attackers can exploit the vulnerability remotely without authentication or user interaction. Public exploit details have been released, increasing the risk of opportunistic attacks against exposed installations. The vulnerability is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Unauthenticated remote attackers can inject arbitrary SQL through the login form, potentially exposing credentials, session data, and other stored content in the underlying database.

Affected Products

code-projects Content Management System 1.0
Deployments exposing /login.php to untrusted networks
Installations that have not applied vendor-supplied input validation fixes

Discovery Timeline

2026-09-06 - CVE-2026-86168 published to the National Vulnerability Database (NVD)
2026-09-08 - Last updated in NVD database
2026-09-11 - EPSS score recorded at 0.336% (percentile 26.6)

Technical Details for CVE-2026-86168

Vulnerability Analysis

The vulnerability exists in an unspecified function within /login.php of code-projects Content Management System 1.0. The application concatenates the user_name request parameter into a SQL statement without parameterization or input escaping. An attacker submits crafted input to the login form and alters the query logic executed by the backend database.

Because authentication occurs after the injection point, exploitation does not require valid credentials. Attackers can bypass authentication, enumerate database contents, or extract sensitive tables using standard SQL injection techniques. Additional detail is available in the GitHub SQL Injection write-up and the VulDB CVE-2026-86168 entry.

Root Cause

The root cause is improper neutralization of special elements passed through the user_name parameter. The login handler builds a dynamic SQL query by inserting raw user input directly into the statement. No prepared statements, parameter binding, or allowlist validation are applied before execution.

Attack Vector

The attack vector is network-based. An attacker sends an HTTP POST request to /login.php containing SQL metacharacters in the user_name field. The manipulated query executes against the database, returning modified results or triggering conditional logic that reveals data through timing or error responses.

// Vulnerability description (no verified proof-of-concept code available)
// The /login.php handler processes the user_name POST parameter
// and inserts it into a SQL query without sanitization.
// Attackers manipulate the parameter with SQL operators to alter query logic.
// Refer to the linked GitHub advisory for technical reproduction steps.

Detection Methods for CVE-2026-86168

Indicators of Compromise

HTTP POST requests to /login.php containing SQL keywords such as UNION, SELECT, OR 1=1, or comment sequences (--, #) in the user_name parameter
Database error messages returned to clients from the login endpoint
Unusual login attempts producing time-based delays consistent with blind SQL injection

Detection Strategies

Deploy web application firewall (WAF) rules that inspect the user_name parameter of /login.php for SQL injection patterns
Enable database query logging and alert on syntactically anomalous queries originating from the login handler
Review web server access logs for repeated login requests from a single source combined with unusual parameter values

Monitoring Recommendations

Correlate authentication failures with WAF SQL injection alerts to identify active exploitation attempts
Monitor outbound database connections and large result sets from the CMS host that deviate from baseline behavior
Track new administrative account creations and privilege changes in the application database

How to Mitigate CVE-2026-86168

Immediate Actions Required

Restrict network access to /login.php using IP allowlisting or VPN gating until a patch is available
Deploy WAF signatures that block SQL injection payloads targeting the user_name parameter
Rotate database credentials and application secrets if exploitation is suspected

Patch Information

No official vendor patch has been published in the referenced advisories at the time of publication. Administrators should monitor code-projects.org and the VulDB vulnerability record for updates. Where feasible, replace vulnerable query construction with parameterized statements and enforce server-side input validation on the user_name field.

Workarounds

Disable public access to the CMS login page until validated fixes are deployed
Implement server-side input validation that rejects SQL metacharacters in authentication parameters
Move to prepared statements or parameterized queries for all authentication logic
Enforce least-privilege database accounts so the CMS user cannot read sensitive tables or execute administrative statements

bash

# Example ModSecurity rule to block SQL injection patterns targeting user_name
SecRule ARGS:user_name "@detectSQLi" \
  "id:1026861680,\
  phase:2,\
  deny,\
  status:403,\
  msg:'Potential SQL injection in user_name parameter (CVE-2026-86168)',\
  logdata:'Matched Data: %{MATCHED_VAR}'"