CVE-2026-11908 in Tagify
Summary
by MITRE • 07/11/2026
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Tagify allows Stored XSS. This issue affects Tagify versions: from 0.0.0 to 1.2.52.
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Analysis
by VulDB Data Team • 07/11/2026
The vulnerability identified as improper neutralization of input during web page generation represents a classic cross-site scripting flaw that has been detected in the Drupal Tagify module. This specific weakness falls under the category of stored cross-site scripting attacks where malicious code can be persistently injected into web pages viewed by other users. The issue manifests when the Tagify module fails to properly sanitize user-supplied input before incorporating it into dynamically generated web content, creating an environment where attackers can execute arbitrary scripts within the context of other users' browsers.
Drupal Tagify version 0.0.0 through 1.2.52 contains this vulnerability that allows malicious actors to inject persistent script code through the module's input handling mechanisms. The flaw occurs during the web page generation process when user-provided data is not adequately filtered or escaped before being rendered back to end users. This creates a dangerous condition where attackers can craft malicious payloads that get stored within the application's database or storage mechanisms and subsequently executed whenever legitimate users view affected pages containing the compromised content. The vulnerability specifically impacts how the module processes and displays tag data, making it particularly dangerous in environments where users can create or modify tagged content.
The operational impact of this stored XSS vulnerability extends beyond simple script execution to potentially compromise entire user sessions and access credentials. When exploited, attackers can hijack user sessions, steal sensitive information, perform unauthorized actions on behalf of victims, and even redirect users to malicious websites. The persistence aspect of stored XSS means that once the malicious payload is injected, it continues to affect users until manually removed from the system. This vulnerability particularly affects Drupal installations where Tagify is actively used for content tagging, potentially exposing all users who interact with tagged content to the risk of script injection attacks. The attack vector typically involves crafting specially formatted tags or content that contains javascript code which gets executed when other users view the affected pages.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and output encoding mechanisms throughout the Tagify module's codebase. The recommended approach includes applying strict sanitization filters to all user-supplied data before storage, implementing context-specific output escaping for rendered content, and ensuring that all dynamic content generation properly handles potentially malicious inputs. Organizations should immediately upgrade to patched versions of the Tagify module when available, as this represents a critical security risk that can lead to complete system compromise. Additionally, implementing web application firewalls with XSS detection capabilities and conducting regular security audits of Drupal installations can help prevent exploitation of similar vulnerabilities across the entire application stack. This issue aligns with CWE-79 which specifically addresses cross-site scripting vulnerabilities in software applications, and follows ATT&CK techniques related to command and control through client-side exploitation.