CVE-2026-28507 in Idno
Summary
by MITRE • 03/06/2026
Idno is a social publishing platform. Prior to version 1.6.4, there is a remote code execution vulnerability via chained import file write and template path traversal. This issue has been patched in version 1.6.4.
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Analysis
by VulDB Data Team • 03/16/2026
The vulnerability identified as CVE-2026-28507 affects Idno, a social publishing platform that enables users to create and share content across various social networks. This remote code execution flaw represents a critical security weakness that could allow attackers to gain unauthorized control over affected systems. The vulnerability stems from improper input validation and inadequate sanitization of user-supplied data within the platform's import functionality and template handling mechanisms. Prior to version 1.6.4, malicious actors could exploit this weakness to execute arbitrary code on the target system, potentially leading to complete system compromise and unauthorized access to sensitive data.
The technical exploitation of this vulnerability involves a chained attack pattern that combines two distinct but related weaknesses. The first component involves a file write operation that allows attackers to upload malicious files to the server through the import functionality. This initial foothold is then leveraged through a template path traversal vulnerability that enables attackers to manipulate the template resolution process. The combination of these two flaws creates a powerful attack vector where an attacker can first upload a malicious file and then execute it through template manipulation. This chained approach demonstrates the importance of defense-in-depth principles and highlights how seemingly isolated vulnerabilities can be combined to create more severe security impacts. The vulnerability aligns with CWE-94, which describes improper control of generation of code, and CWE-22, which addresses improper limitation of a pathname to a restricted directory.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with extensive capabilities to compromise the entire platform infrastructure. Successful exploitation could enable attackers to install backdoors, steal user credentials and content, modify or delete data, and potentially use the compromised system as a launching point for attacks on other systems within the network. The social publishing nature of Idno makes this particularly dangerous, as attackers could gain access to user-generated content, personal information, and social network connections that could be exploited for further attacks. This vulnerability affects not only the platform administrators but also all users who rely on the system for content sharing and social interaction. The remote nature of the exploit means that attackers do not require physical access to the system, making the attack surface significantly larger and the risk more pronounced. Organizations using Idno should consider this vulnerability in their overall threat modeling and incident response planning, as it represents a sophisticated attack pattern that could be used in targeted campaigns.
Mitigation strategies for CVE-2026-28507 focus primarily on immediate remediation through the application of the security patch released in version 1.6.4. Organizations should prioritize updating their Idno installations to the latest version and verify that the patch has been correctly applied. Additionally, implementing network-level controls such as firewalls and intrusion detection systems can help detect and prevent exploitation attempts. Security monitoring should be enhanced to track unusual file upload activities and template manipulation patterns. The vulnerability serves as a reminder of the importance of secure coding practices, particularly in handling user input and file operations. Organizations should conduct thorough security reviews of their import and template processing functionalities to identify similar weaknesses. This incident demonstrates the value of following the principle of least privilege, ensuring that file upload and template processing operations have minimal system privileges and are properly sandboxed. The vulnerability also underscores the importance of regular security assessments and vulnerability scanning to identify and remediate similar issues before they can be exploited by malicious actors. Organizations should also consider implementing web application firewalls and content security policies to add additional layers of protection against such attacks.