A important saved cross-site scripting vulnerability has emerged within the fashionable DotNetNuke (DNN) Platform, threatening web sites powered by this widely-used content material administration system.
The vulnerability, tracked as CVE-2025-59545 with a severity rating of 9.1 out of 10, impacts all DNN Platform variations previous to 10.1.0 and permits attackers to execute malicious scripts by way of the platform’s Immediate module.
The safety flaw stems from the way in which DNN’s Immediate module processes instructions that return uncooked HTML output.
Whereas the platform usually sanitizes user-submitted knowledge earlier than displaying it in entry types, the Immediate module bypasses these commonplace sanitation mechanisms by treating command output as executable HTML.
This creates a harmful pathway for attackers to inject and execute malicious scripts inside the software’s trusted surroundings.
The vulnerability poses important dangers to organizations working affected DNN installations, significantly when exploited in super-user contexts.
Attackers can craft malicious enter containing embedded scripts or dangerous markup that, when processed by way of particular Immediate instructions, will get rendered straight in browsers with out correct safety validation.
Github analysts recognized this important weak spot by way of complete safety analysis, highlighting the significance of steady platform monitoring for rising threats.
Attackers leverage this vulnerability by concentrating on the network-accessible Immediate module with comparatively low complexity assault vectors.
The exploitation requires minimal privileges and person interplay, making it a lovely goal for malicious actors searching for to compromise DNN-powered web sites.
As soon as efficiently exploited, the vulnerability can affect system confidentiality, integrity, and availability throughout modified safety scopes.
Exploitation Mechanism and Assault Vectors
The assault mechanism revolves across the elementary design flaw in how the Immediate module handles command execution and output rendering.
When an attacker submits crafted enter by way of the module, the system fails to tell apart between reputable HTML output and malicious script content material.
The vulnerability manifests when particular instructions course of untrusted knowledge and return it as HTML, successfully bypassing the appliance’s safety boundaries.
The assault vector follows a saved XSS sample, categorized beneath CWE-79 weak spot classification.
Malicious payloads will be persistently saved inside the system and executed at any time when the compromised content material is accessed.
This persistence issue amplifies the vulnerability’s affect, because it impacts not solely the preliminary sufferer however doubtlessly all subsequent customers who work together with the compromised content material.
Organizations utilizing affected DNN Platform variations ought to instantly improve to model 10.1.0, which incorporates complete patches addressing this important safety flaw.
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