CVE-2026-6191: Construction Management System SQLi Flaw

CVE-2026-6191 Overview

CVE-2026-6191 is a SQL injection vulnerability in itsourcecode Construction Management System 1.0. The flaw resides in the /equipments.php script, where the Name parameter is passed to a database query without proper sanitization. An authenticated remote attacker can manipulate this parameter to inject arbitrary SQL statements. The exploit has been publicly disclosed, increasing the likelihood of opportunistic abuse against exposed installations. The weakness is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Successful exploitation allows attackers to read, modify, or delete records in the Construction Management System database, potentially exposing project, equipment, and user data.

Affected Products

itsourcecode Construction Management System 1.0
The vulnerable component is the /equipments.php endpoint
The vulnerable parameter is the Name argument

Discovery Timeline

2026-04-13 - CVE-2026-6191 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-6191

Vulnerability Analysis

The vulnerability is a classic SQL injection in the equipments.php script of the Construction Management System. The application embeds the user-controlled Name request parameter directly into a SQL query string without parameterization or input validation. As a result, attackers can break out of the intended query context and append arbitrary SQL clauses.

Because the attack vector is network-based and requires only low-level authentication, exploitation is straightforward against any reachable instance. The public disclosure of exploit details further lowers the barrier to entry for less-skilled attackers. EPSS data indicates a current exploit probability of 0.031%, reflecting limited mass-exploitation activity at this time.

Root Cause

The root cause is the absence of prepared statements or input sanitization when handling the Name parameter. The application concatenates request input into SQL queries, allowing metacharacters such as single quotes, comments, and UNION clauses to alter query semantics. This pattern is consistent with CWE-74 injection weaknesses.

Attack Vector

An attacker sends a crafted HTTP request to /equipments.php with a malicious payload in the Name parameter. The injected SQL can extract database contents through UNION-based queries, infer data via boolean or time-based blind techniques, or modify records via stacked queries depending on the underlying database engine. No user interaction is required, and the attack can be launched remotely once the attacker holds any valid low-privilege session.

For technical context, see the GitHub Issue Discussion and the VulDB Vulnerability #357113 entry.

Detection Methods for CVE-2026-6191

Indicators of Compromise

HTTP requests to /equipments.php containing SQL metacharacters such as ', ", --, /*, UNION, SELECT, or SLEEP( in the Name parameter.
Web server access logs showing anomalous response sizes or HTTP 500 errors tied to requests against equipments.php.
Unexpected database errors referencing syntax issues in queries originating from the equipment management module.

Detection Strategies

Deploy web application firewall (WAF) rules that flag SQL injection signatures specifically on the Name query parameter of /equipments.php.
Enable verbose database query logging and alert on queries containing unparameterized concatenation of user input from the equipment workflow.
Correlate authentication events with subsequent injection attempts to identify abused low-privilege accounts.

Monitoring Recommendations

Monitor outbound traffic from the application server for signs of data exfiltration following suspicious queries.
Track query execution times to identify time-based blind SQL injection probes against the database.
Review user account activity for low-privilege accounts performing administrative-style reads against equipment or project tables.

How to Mitigate CVE-2026-6191

Immediate Actions Required

Restrict access to the Construction Management System to trusted networks or VPN until a vendor patch is available.
Audit recent access logs for /equipments.php and investigate any requests containing SQL keywords or special characters in the Name parameter.
Rotate database credentials and review database user privileges to ensure the application account follows least privilege.

Patch Information

No official vendor patch has been published at the time of writing. Refer to the IT Source Code Blog for any forthcoming updates and to the VulDB Vulnerability #357113 entry for tracking remediation status.

Workarounds

Place the application behind a WAF configured to block SQL injection patterns targeting the Name parameter.
Modify the application source to use parameterized queries or prepared statements when handling the Name input in equipments.php.
Apply server-side input validation to reject non-alphanumeric characters where they are not required by the equipment naming schema.

bash

# Example ModSecurity rule to block SQLi against equipments.php Name parameter
SecRule REQUEST_URI "@contains /equipments.php" \
    "chain,id:1026619100,phase:2,deny,status:403,msg:'Possible SQLi on equipments.php Name parameter'"
    SecRule ARGS:Name "@detectSQLi" "t:none,t:urlDecodeUni"