CVE-2025-5083 in Amministrazione Trasparente Plugin
Summary
by MITRE • 08/31/2025
The Amministrazione Trasparente plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 9.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
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Analysis
by VulDB Data Team • 08/31/2025
The vulnerability identified as CVE-2025-5083 affects the Amministrazione Trasparente plugin for WordPress, representing a critical stored cross-site scripting flaw that undermines the security integrity of affected installations. This vulnerability exists within all versions up to and including version 9.0, creating a persistent threat vector that can be exploited by malicious actors with administrative privileges. The flaw specifically manifests in the plugin's handling of admin settings where insufficient input sanitization and output escaping mechanisms fail to properly validate user-supplied data before it is stored and subsequently rendered in web pages.
The technical nature of this vulnerability stems from the plugin's failure to adequately sanitize user inputs within its administrative configuration interface. When administrators configure plugin settings, the system does not sufficiently filter or escape potentially malicious script content that could be embedded within input fields. This inadequate validation creates a scenario where attacker-controlled scripts can be permanently stored within the plugin's configuration data. The vulnerability is particularly concerning because it requires only administrative-level access to exploit, making it accessible to users who have already compromised administrative accounts or who possess elevated privileges within the WordPress environment.
The operational impact of this vulnerability extends beyond simple script execution, as it creates a persistent backdoor that can affect any user who accesses pages containing the injected content. The stored nature of the XSS attack means that the malicious scripts will execute automatically whenever any user accesses affected pages, potentially leading to session hijacking, credential theft, or further compromise of the WordPress installation. This threat is particularly severe in multi-site installations where the vulnerability could propagate across multiple sites within a single network, amplifying the potential damage. The restriction that this only affects multi-site installations or installations with unfiltered_html disabled suggests that the vulnerability's exploitation is somewhat constrained by specific configuration parameters, though this does not diminish its severity.
The vulnerability aligns with CWE-79, which describes Cross-Site Scripting flaws that occur when untrusted data is sent to a web browser without proper validation or escaping. Additionally, this weakness maps to ATT&CK technique T1059.007, which covers Scripting through web shells and command execution via web interfaces. Organizations should consider implementing comprehensive input validation mechanisms, output escaping for all user-supplied data, and regular security audits of plugin configurations. The recommended mitigation strategy includes immediate patching to the latest version of the Amministrazione Trasparente plugin, implementing strict input sanitization protocols, and conducting thorough security reviews of all administrative interfaces. Organizations should also consider implementing network segmentation and monitoring for suspicious script injection attempts, as well as establishing robust access control measures to limit administrative privileges to only essential personnel. The vulnerability demonstrates the critical importance of proper input validation in web applications and highlights the potential for privilege escalation through seemingly innocuous administrative features.