CVE-2023-24269 in Textpattern
Summary
by MITRE • 04/29/2023
An arbitrary file upload vulnerability in the plugin upload function of Textpattern v4.8.8 allows attackers to execute arbitrary code via a crafted Zip file.
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Analysis
by VulDB Data Team • 10/20/2025
The vulnerability identified as CVE-2023-24269 represents a critical arbitrary file upload flaw within the Textpattern content management system version 4.8.8. This issue specifically affects the plugin upload functionality, creating a pathway for remote attackers to gain unauthorized code execution capabilities. The vulnerability stems from insufficient input validation and sanitization mechanisms within the file upload handler, allowing malicious actors to bypass security controls and deploy malicious payloads through seemingly legitimate upload processes.
Textpattern's plugin upload mechanism lacks proper file type verification and content inspection, enabling attackers to upload specially crafted zip archives containing malicious files. When the system processes these archives, it fails to adequately validate the contents or enforce strict file type restrictions, particularly for archive files that may contain nested malicious payloads. The vulnerability exploits a fundamental weakness in the application's file handling logic, where the system does not properly distinguish between legitimate plugin components and potentially harmful code within compressed archives. This flaw aligns with CWE-434, which describes insecure file upload vulnerabilities where applications accept files without proper validation of their content or type.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with persistent access to the compromised system. Successful exploitation allows adversaries to upload backdoors, web shells, or other malicious payloads that can be used for further reconnaissance, data exfiltration, or lateral movement within the network. The attack surface is particularly concerning given that Textpattern installations may host sensitive content and user data, making the compromise of such systems a significant security risk. This vulnerability can be leveraged by attackers to establish persistent footholds, potentially leading to complete system compromise and unauthorized access to database contents.
Security professionals should prioritize immediate remediation of this vulnerability through the application of official patches provided by Textpattern developers or by implementing temporary workarounds such as disabling plugin upload functionality until proper updates are applied. Organizations should also implement network-based detection measures to monitor for suspicious file upload activities and consider implementing strict file type filtering at the network perimeter. The vulnerability demonstrates the critical importance of input validation and proper file handling practices, as outlined in the OWASP Top Ten and MITRE ATT&CK framework, where such flaws can be categorized under the technique of "Command and Scripting Interpreter" and "T1059.007" for execution through web shells. Additionally, implementing proper access controls and privilege separation can help limit the potential damage from successful exploitation, while regular security audits and penetration testing can help identify similar vulnerabilities in other components of the application stack.