CVE-2026-1111 in PublicCMS
Summary
by MITRE • 01/18/2026
A vulnerability has been found in Sanluan PublicCMS up to 5.202506.d. This impacts the function Save of the file com/publiccms/controller/admin/sys/TaskTemplateAdminController.java of the component Task Template Management Handler. Such manipulation of the argument path leads to path traversal. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 02/05/2026
The vulnerability identified as CVE-2026-1111 represents a critical path traversal flaw within the Sanluan PublicCMS content management system version 5.202506.d and earlier. This security weakness resides in the Task Template Management Handler component, specifically within the Save function of the com/publiccms/controller/admin/sys/TaskTemplateAdminController.java file. The vulnerability stems from inadequate input validation and sanitization of the path parameter, which allows malicious actors to manipulate file system access through carefully crafted requests. The flaw enables attackers to traverse the file system hierarchy and potentially access, modify, or execute arbitrary files on the server. This type of vulnerability falls under the Common Weakness Enumeration category CWE-22, which specifically addresses path traversal vulnerabilities that occur when application code allows user-controllable input to influence file system paths without proper validation or sanitization.
The operational impact of this vulnerability extends beyond simple file access, as it provides attackers with the capability to perform remote code execution and arbitrary file manipulation on affected systems. An attacker can exploit this flaw to access sensitive configuration files, database credentials, application source code, and other critical system resources. The remote exploitation capability means that attackers do not need physical access to the system or local network privileges to leverage this vulnerability, making it particularly dangerous in internet-facing applications. The vulnerability's disclosure status indicates that malicious actors have likely already developed exploit code, increasing the risk of active exploitation in the wild. The lack of vendor response to early disclosure attempts suggests potential delays in patch development or may indicate a lack of awareness regarding the severity of the issue, leaving affected organizations without timely security updates.
Security professionals should implement immediate mitigations including input validation, parameter sanitization, and access controls to prevent path traversal attacks. The recommended approach involves implementing strict input validation for all user-controllable parameters, particularly those used in file system operations, and employing proper path normalization techniques to prevent directory traversal sequences from being interpreted by the application. Organizations should also consider implementing web application firewalls and security monitoring to detect and block suspicious file access patterns. The ATT&CK framework categorizes this vulnerability under T1059 for command and scripting interpreter and T1021 for remote services, indicating that attackers may use this vulnerability as a foothold for further system compromise. Additionally, implementing principle of least privilege access controls and regular security audits can help minimize the potential damage from such vulnerabilities, while also ensuring compliance with industry standards such as NIST SP 800-53 and ISO 27001 security requirements for information security management.