CVE-2026-81779 in Newspapers X Plugin
Summary
by MITRE • 09/01/2026
Improper Validation of Specified Quantity in Input vulnerability in Silk Themes Newspapers X allows Malicious Software Implanted.
This issue affects Newspapers X: from 1.0.46 through 1.0.48.
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Analysis
by VulDB Data Team • 09/01/2026
The vulnerability identified as Improper Validation of Specified Quantity in Input within the Newspapers X application, specifically affecting versions from 1.0.46 to 1.0.48, represents a critical security flaw rooted in inadequate sanitization and validation mechanisms for user-supplied data. This issue arises when the application processes input parameters that dictate quantities or counts without sufficiently verifying their integrity against expected constraints. In the context of mobile applications like Newspapers X, which often handle dynamic content loading and resource allocation based on user interactions, such a flaw can lead to severe consequences if an attacker crafts malicious payloads designed to exploit this lack of validation. The core technical failure lies in the application's inability to distinguish between legitimate input values and those intended for exploitation, allowing external entities to inject code or manipulate internal logic through specially crafted inputs that bypass standard security checks.
From a technical perspective, this vulnerability aligns with CWE-20 Improper Input Validation, where software fails to verify that incoming data meets the expected format, type, length, range, and other constraints before processing it. When an application accepts input without rigorous validation, it creates an entry point for attackers to execute arbitrary code or implant malicious software. In this specific case, the improper handling of specified quantities likely allows an attacker to manipulate internal variables related to resource allocation or data retrieval processes. By supplying a value that exceeds expected bounds or contains encoded malicious instructions, an adversary can trigger unintended behavior within the application's runtime environment. This could involve buffer overflows, logic errors, or injection attacks depending on how the quantity is utilized internally by the Newspapers X framework.
The operational impact of this vulnerability is significant, primarily due to its potential to facilitate the implantation of malicious software onto user devices. If an attacker successfully exploits this flaw, they can compromise the integrity and confidentiality of the device running the vulnerable version of Newspapers X. The ability to implant malware means that attackers could gain unauthorized access to sensitive personal data stored on the device, such as browsing history, saved credentials, or private communications. Furthermore, malicious software implanted through this vector may establish persistent backdoors, allowing for ongoing surveillance, data exfiltration, or use of the compromised device in botnet activities. This transforms a simple input validation error into a severe threat to user privacy and device security, potentially leading to financial loss or identity theft depending on the capabilities of the implanted malware.
This vulnerability also maps closely to MITRE ATT&CK techniques related to Initial Access and Execution. Specifically, it resembles aspects of T1059 Command and Scripting Interpreter if the input allows for script execution, or more broadly aligns with injection-based attacks where untrusted data is interpreted as code by the application. The lack of proper validation serves as a foundational weakness that enables subsequent stages of an attack chain, including privilege escalation and persistence mechanisms typically associated with advanced persistent threats. Attackers can leverage this flaw to bypass security controls designed to prevent unauthorized software installation or execution within the mobile ecosystem.
To mitigate this risk, immediate action is required by users running affected versions of Newspapers X. The most effective remediation strategy is to update the application to a version newer than 1.0.48, where developers have presumably implemented stricter input validation and sanitization routines. Developers should ensure that all user inputs are validated against strict allowlists rather than relying on blocklists or heuristic checks. Implementing parameterized queries if database interactions are involved, enforcing type checking for numeric fields like quantities, and applying length constraints can prevent the exploitation of this flaw. Additionally, integrating runtime application self-protection mechanisms and conducting regular code reviews focused on input handling practices will help fortify the application against similar vulnerabilities in the future. Security teams should also monitor for any indicators of compromise related to unauthorized software installations or unusual network traffic originating from devices running the vulnerable versions.