CVE-2026-10257: itsourcecode CMS SQLi Vulnerability

CVE-2026-10257 Overview

CVE-2026-10257 is a SQL injection vulnerability in itsourcecode Content Management System 1.0. The flaw exists in the /admin/update_ss_img.php script, where the topic_id parameter is passed to a database query without proper sanitization. Remote attackers with low-level privileges can manipulate this parameter to inject arbitrary SQL statements. The exploit code has been publicly released, increasing the likelihood of opportunistic abuse against exposed installations. The vulnerability is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Authenticated attackers can manipulate the topic_id parameter in /admin/update_ss_img.php to read, modify, or delete arbitrary database records via SQL injection.

Affected Products

itsourcecode Content Management System 1.0
Component: /admin/update_ss_img.php
Vulnerable parameter: topic_id

Discovery Timeline

2026-06-01 - CVE CVE-2026-10257 published to NVD
2026-06-01 - Last updated in NVD database

Technical Details for CVE-2026-10257

Vulnerability Analysis

The vulnerability resides in the administrative endpoint /admin/update_ss_img.php of itsourcecode Content Management System 1.0. The script accepts a topic_id argument and concatenates it directly into a SQL statement. Because the input is not validated, escaped, or bound through a parameterized query, an attacker can append arbitrary SQL syntax to the query.

Attackers can leverage classic injection techniques such as UNION-based extraction, boolean-based blind injection, or time-based blind injection. Successful exploitation exposes data confidentiality, integrity, and availability of the underlying database. The endpoint sits within the admin path, requiring an authenticated low-privilege session, which limits but does not eliminate exposure.

Root Cause

The root cause is improper neutralization of user-supplied input passed to a downstream SQL interpreter. The topic_id value is treated as trusted data and embedded into a dynamic query string. Standard mitigations such as prepared statements, type casting, or input whitelisting are absent from the affected code path.

Attack Vector

The attack is performed remotely over the network against the admin interface. The attacker sends a crafted HTTP request to /admin/update_ss_img.php containing a malicious topic_id payload. No user interaction is required beyond having a valid authenticated session against the application. Public exploit details have been published through VulDB Vulnerability #367537 and the GitHub Issue Tracker.

Detection Methods for CVE-2026-10257

Indicators of Compromise

HTTP requests to /admin/update_ss_img.php containing SQL metacharacters in the topic_id parameter such as single quotes, UNION SELECT, SLEEP(, or comment sequences (--, #).
Unexpected database errors or stack traces in web server logs referencing the update_ss_img.php endpoint.
Anomalous administrative session activity originating from unfamiliar IP addresses or geolocations.

Detection Strategies

Inspect web server access logs for non-numeric values of topic_id submitted to /admin/update_ss_img.php.
Deploy Web Application Firewall (WAF) signatures that flag SQL injection patterns targeting the admin path.
Correlate authentication events with subsequent administrative requests to identify credential abuse preceding injection attempts.

Monitoring Recommendations

Enable database query logging on the CMS database account and alert on unusual INFORMATION_SCHEMA or mysql.user access.
Monitor outbound connections from the web server for data exfiltration following suspicious admin requests.
Track failed and successful admin logins to identify brute-force activity that may precede exploitation.

How to Mitigate CVE-2026-10257

Immediate Actions Required

Restrict network access to the /admin/ directory using IP allow-lists or VPN-only access until a vendor fix is available.
Rotate all administrative credentials and database credentials used by the CMS.
Apply WAF rules that block SQL metacharacters in the topic_id parameter on the update_ss_img.php endpoint.

Patch Information

No official vendor patch has been published at the time of NVD publication. Refer to the IT Source Code Blog and the VulDB CVE-2026-10257 entry for updates. Operators should monitor the vendor channel for a corrected release and apply it immediately upon availability.

Workarounds

Modify the affected update_ss_img.php script to cast topic_id to an integer using intval($_REQUEST['topic_id']) before use in any query.
Replace dynamic SQL with parameterized queries using PDO prepared statements or mysqli_prepare with bound parameters.
Reduce the privileges of the database account used by the CMS to the minimum required, preventing schema modification or cross-database access.
Disable or remove the update_ss_img.php endpoint if the functionality is not required in production.

bash

# Example WAF rule (ModSecurity) to block SQL metacharacters in topic_id
SecRule ARGS:topic_id "@rx [^0-9]" \
    "id:1026102570,phase:2,deny,status:403,\
    msg:'CVE-2026-10257 - Non-numeric topic_id blocked',\
    logdata:'Matched value: %{MATCHED_VAR}'"