CVE-2026-1574 in MyQtip Plugin
Summary
by MITRE • 03/07/2026
The MyQtip – easy qTip2 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `myqtip` shortcode in all versions up to, and including, 2.0.5 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Analysis
by VulDB Data Team • 03/08/2026
The vulnerability identified as CVE-2026-1574 affects the MyQtip – easy qTip2 plugin for WordPress, a widely used tool for implementing tooltip functionality on WordPress websites. This plugin has been found to contain a critical stored cross-site scripting vulnerability that impacts all versions up to and including 2.0.5. The flaw resides within the plugin's `myqtip` shortcode implementation, where insufficient input sanitization and output escaping mechanisms fail to properly validate or encode user-supplied attributes before they are processed and rendered in web pages. The vulnerability specifically targets authenticated attackers who possess contributor-level access or higher permissions within the WordPress environment, making it particularly concerning for sites with multiple user roles or those that grant editing privileges to users beyond administrators.
The technical nature of this vulnerability stems from the plugin's failure to implement proper input validation and output escaping mechanisms when handling shortcode attributes. When an authenticated attacker with contributor privileges creates or modifies content using the `myqtip` shortcode, they can inject malicious JavaScript code into attributes that are then stored within the WordPress database. This stored malicious code becomes persistent and executes whenever any user accesses a page containing the injected content, regardless of whether the user has administrative privileges or not. The vulnerability operates at the application layer and represents a classic stored XSS flaw that allows attackers to execute arbitrary scripts in the context of the victim's browser, potentially leading to session hijacking, credential theft, or further exploitation of the compromised system.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with a persistent vector for maintaining access to compromised WordPress installations. Since the malicious code is stored within the database, it remains active even after the initial injection point is closed, allowing attackers to maintain their foothold over extended periods. This vulnerability particularly affects WordPress sites that rely heavily on user-generated content or collaborative editing environments where contributors may have legitimate access to shortcode functionality but could be compromised or malicious. The attack requires minimal privileges, making it accessible to attackers who may not have direct administrative access but can manipulate content through legitimate contributor accounts. This vulnerability aligns with CWE-79, which categorizes cross-site scripting flaws, and represents a significant risk to WordPress site security that could enable attackers to escalate privileges, steal sensitive data, or compromise the entire WordPress installation.
Mitigation strategies for CVE-2026-1574 should prioritize immediate plugin updates to versions that address the input sanitization and output escaping deficiencies. Administrators should ensure that all users with contributor-level access or higher are properly vetted and that role-based access controls are strictly enforced to minimize potential attack vectors. The implementation of additional security measures such as content security policies, regular security audits, and monitoring of user activity within the WordPress admin interface can help detect and prevent unauthorized shortcode modifications. Organizations should also consider implementing web application firewalls to detect and block suspicious shortcode parameter patterns and conduct regular vulnerability assessments to identify similar issues in other plugins or themes. The ATT&CK framework categorizes this vulnerability under T1059.001 for command and scripting interpreter, as it allows attackers to execute malicious scripts, and T1546.001 for system binary proxy, since the vulnerability leverages legitimate WordPress functionality to execute malicious code. Given the nature of the vulnerability, it is essential that all WordPress installations using this plugin undergo immediate remediation to prevent exploitation and maintain the security posture of the overall web infrastructure.