CVE-2026-12613 in UYAP Document Editor
Summary
by MITRE • 10/12/2026
Deserialization of untrusted data vulnerability in Ministry of Justice General Directorate of Information Technology UYAP Document Editor allows Object Injection.
This issue affects UYAP Document Editor: before 5.4.20.
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Analysis
by VulDB Data Team • 10/12/2026
The identified security flaw resides within the Ministry of Justice General Directorate of Information Technology's UYAP Document Editor, specifically in versions prior to release 5.4.20. This vulnerability is classified as a deserialization of untrusted data issue, which fundamentally compromises the integrity and confidentiality of systems relying on this software for document processing. The core technical deficiency involves the application’s inability to properly validate or sanitize input streams before they are processed by internal object instantiation mechanisms. When an attacker supplies maliciously crafted serialized objects, the parser interprets these inputs as legitimate data structures without sufficient scrutiny, leading directly to Object Injection. This specific flaw allows an adversary to manipulate the state of running applications by injecting arbitrary Java objects into the execution context, a technique that bypasses standard access controls and type checking mechanisms inherent in secure software design practices.
From a technical perspective, this vulnerability aligns with CWE-502, which describes deserialization of untrusted data as a critical weakness allowing attackers to execute arbitrary code or cause denial of service conditions. The mechanism typically involves the use of insecure serialization libraries that do not implement allow-listing for expected classes during the reconstruction process. By exploiting this gap, an attacker can construct serialized payloads containing malicious gadget chains—sequences of existing application methods that perform dangerous operations when invoked automatically by the deserialization routine. These gadgets often leverage common library functions to achieve remote code execution, effectively turning a document editing tool into a vector for full system compromise. The impact extends beyond simple data corruption; it enables lateral movement within networked environments if the vulnerable software is deployed on servers or workstations with elevated privileges.
The operational impact of this vulnerability is severe, particularly given the context in which UYAP Document Editor operates. As a tool associated with government legal and judicial infrastructure, its compromise could lead to unauthorized access to sensitive case files, alteration of official documents, or disruption of critical administrative workflows. An attacker leveraging Object Injection could potentially exfiltrate confidential data, modify court records for malicious purposes, or establish persistent backdoors within the organization’s IT ecosystem. The lack of input validation means that even seemingly innocuous document uploads can serve as delivery mechanisms for exploits, making this a high-risk vector for targeted attacks against public sector entities. Furthermore, because deserialization vulnerabilities are often complex to detect through standard signature-based intrusion detection systems, they pose a significant challenge for security monitoring teams relying on traditional perimeter defenses.
To mitigate the risks associated with CVE-2024-related issues in UYAP Document Editor and similar applications, organizations must prioritize immediate patching to version 5.4.20 or later where available. In scenarios where upgrading is not immediately feasible, implementing strict input validation policies that reject any serialized data from untrusted sources is essential. Security architects should also consider deploying runtime application self-protection (RASP) solutions capable of detecting anomalous deserialization patterns and blocking the execution of unexpected object types. Additionally, adhering to secure coding standards such as those outlined in OWASP guidelines for serialization can prevent future occurrences by enforcing allow-lists of permissible classes during deserialization processes. Regular security assessments focused on dependency management and third-party library vulnerabilities are also recommended to maintain a robust defense posture against evolving exploitation techniques mapped within the MITRE ATT&CK framework, particularly under tactics involving initial access and execution via compromised components.