CVE-2026-1105: Medium Vulnerability in EasyCMS

A vulnerability was identified in EasyCMS up to 1.6, affecting unknown code in the file /UserAction.class.php. This vulnerability allows for SQL injection through manipulation of the argument _order, which can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond.

The severity of this vulnerability is classified as medium, with a CVSS score of 5.5. Organizations using EasyCMS should be aware of the potential risks associated with this vulnerability, including unauthorized access to database information and potential data loss. Given the nature of SQL injection, the impact could be significant if exploited.

Currently, there is no known public exploit confirmed for this vulnerability, although the availability of a proof-of-concept indicates that attackers may leverage this weakness. Organizations should prioritize addressing this vulnerability in their patch cycle to prevent potential exploitation.

Risk to organizations includes unauthorized access to sensitive data and potential data integrity issues. Organizations should prioritize patching immediately.

Vulnerability Details

The official CVE description states: "A vulnerability was identified in EasyCMS up to 1.6. This vulnerability affects unknown code of the file /UserAction.class.php. Such manipulation of the argument _order leads to SQL injection. The attack can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way."

The vulnerability is classified as a SQL injection, specifically identified by CWE-89. The CVSS score is 5.5, indicating a medium severity level. This vulnerability affects EasyCMS versions up to 1.6, with the publication date on January 18, 2026.

Technical Analysis

The root cause of this vulnerability arises from insufficient validation of user input, allowing for SQL injection through the _order argument in the /UserAction.class.php file. The attack vector is network-based, with low attack complexity, meaning that even an unskilled attacker can exploit this vulnerability without requiring authentication or user interaction.

The vulnerability impacts confidentiality, integrity, and availability, each rated as low. This means that while the attacker may gain access to sensitive data, the overall impact on the system's functionality is minimal. However, the potential for data leakage and unauthorized manipulation of the database is significant.

Risk & Impact Analysis

The real-world risk of this vulnerability is noteworthy. Given the possibility for remote exploitation, attackers could execute unauthorized SQL commands, leading to data breaches and integrity issues. The blast radius for organizations that fail to patch may include sensitive customer data being exposed or tampered with.

Organizations should assess the impact of this vulnerability on their operations and prioritize remediation strategies. The urgency for addressing this vulnerability is high, considering the potential consequences of exploitation in a production environment.

Exploitation Status

Affected Versions

EasyCMS versions up to and including 1.6 are affected by this vulnerability. Organizations should ensure that they have applied necessary patches or updates to mitigate this risk.

Mitigation & Remediation

Organizations should prioritize patching EasyCMS to the latest version to mitigate this vulnerability. If a patch is unavailable, consider implementing input validation controls to sanitize input for the _order argument to prevent SQL injection.

For further guidance on security testing, organizations may refer to penetration testing services to validate their security posture.

Detection Guidance

To effectively monitor for exploitation attempts, organizations should review logs for unusual SQL queries that contain manipulation of the _order parameter. Additionally, monitoring for abnormal access patterns that may indicate SQL injection attempts can provide early detection.

AppSecure Threat Intelligence Insight

The long-term significance of this vulnerability underscores the importance of secure coding practices. SQL injection remains one of the most common vulnerabilities in web applications. Organizations must ensure that their security teams are trained in secure development methodologies and regularly review their code for weaknesses.

This incident reflects a pattern where vulnerabilities in widely-used CMS platforms can lead to significant risks. Organizations should conduct regular security assessments to identify and mitigate potential vulnerabilities.

For additional resources on securing applications, organizations can consult the following links: vulnerability management program, cloud penetration testing guide, and API penetration testing guide to enhance their security posture.