CVE-2026-10242: itsourcecode CMS SQLi Vulnerability

CVE-2026-10242 Overview

CVE-2026-10242 is a SQL injection vulnerability in itsourcecode Content Management System 1.0. The flaw resides in the /instructions.php script, where the topic_id parameter is passed to a database query without proper sanitization. Authenticated remote attackers can manipulate the parameter to alter SQL statements and access or modify backend data. The exploit has been disclosed publicly, increasing the likelihood of opportunistic abuse against exposed deployments. The issue is tracked under [CWE-74] (Improper Neutralization of Special Elements in Output).

Critical Impact
Remote attackers with low privileges can inject arbitrary SQL through the topic_id parameter in /instructions.php, compromising the confidentiality and integrity of CMS data.

Affected Products

itsourcecode Content Management System 1.0
/instructions.php endpoint
Deployments exposing the topic_id request parameter

Discovery Timeline

2026-06-01 - CVE-2026-10242 published to NVD
2026-06-01 - Last updated in NVD database

Technical Details for CVE-2026-10242

Vulnerability Analysis

The vulnerability affects an unknown function within /instructions.php in itsourcecode Content Management System 1.0. The application accepts the topic_id argument from HTTP requests and concatenates it directly into a SQL statement. Because the input is not parameterized or escaped, attackers can append additional SQL clauses to the underlying query.

Successful exploitation allows reading arbitrary records from the database, modifying content, or extracting credentials stored within CMS tables. The attack requires network access and low-level privileges. According to the EPSS dataset published 2026-06-04, the probability of exploitation in the wild remains modest, but the public exploit lowers the barrier for attackers.

Root Cause

The root cause is improper neutralization of special elements in the topic_id argument before it reaches the SQL interpreter. The codebase relies on string concatenation rather than prepared statements or parameter binding, which is the standard defense for [CWE-74] class issues.

Attack Vector

An attacker sends a crafted HTTP request to /instructions.php supplying a malicious value in the topic_id parameter. The injected payload modifies the resulting SQL query—commonly using UNION SELECT, boolean blind, or time-based techniques—to extract or alter records. No user interaction is required beyond authentication at a low privilege level.

Refer to the VulDB CVE-2026-10242 Info and GitHub Issue Discussion for additional technical context. No verified proof-of-concept code is reproduced here.

Detection Methods for CVE-2026-10242

Indicators of Compromise

HTTP requests to /instructions.php containing SQL meta-characters such as ', --, UNION, or SLEEP( within the topic_id parameter.
Web server logs showing repeated 200-status responses to /instructions.php with abnormally long query strings.
Database error messages or unexpected response timing tied to requests targeting topic_id.

Detection Strategies

Inspect web access logs for anomalous values of topic_id and correlate with database query logs.
Deploy web application firewall (WAF) signatures that flag SQL injection patterns against the /instructions.php route.
Use database activity monitoring to alert on multi-statement queries originating from the CMS application account.

Monitoring Recommendations

Forward application, web server, and database logs to a centralized analytics platform for correlation.
Alert on bursts of failed SQL queries or schema-introspection queries (information_schema, sqlite_master) from the CMS service account.
Track outbound data volume from the database tier to identify mass extraction attempts.

How to Mitigate CVE-2026-10242

Immediate Actions Required

Restrict network access to the CMS to trusted users and IP ranges until a patched build is available.
Disable or remove the /instructions.php endpoint if it is not required for production operation.
Rotate database credentials used by the application if exploitation is suspected.

Patch Information

No vendor patch has been published in the references at the time of disclosure. Monitor the IT Source Code Homepage and the VulDB Vulnerability #367520 entry for updates. Apply any official fix as soon as it is released.

Workarounds

Place the CMS behind a WAF with rules that block SQL injection payloads targeting the topic_id parameter.
Modify the application code to use parameterized queries or prepared statements for the topic_id argument.
Enforce least-privilege on the database account used by the CMS so that injected queries cannot reach sensitive tables.

bash

# Example WAF rule fragment (ModSecurity-style) blocking SQLi in topic_id
SecRule ARGS:topic_id "@detectSQLi" \
  "id:1010242,phase:2,deny,status:403,\
  msg:'Possible SQLi against /instructions.php (CVE-2026-10242)',\
  tag:'CWE-74'"