CVE-2026-32449 in Themify Event Post Plugin
Summary
by MITRE • 03/13/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in themifyme Themify Event Post themify-event-post allows Stored XSS.This issue affects Themify Event Post: from n/a through <= 1.3.4.
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Analysis
by VulDB Data Team • 03/15/2026
The vulnerability identified as CVE-2026-32449 represents a critical cross-site scripting weakness within the themify-event-post plugin for WordPress, specifically impacting versions ranging from the initial release through version 1.3.4. This flaw resides in the improper neutralization of input during web page generation processes, creating a persistent security risk that allows attackers to execute malicious scripts within the context of affected user sessions. The vulnerability classifies under CWE-79 which specifically addresses cross-site scripting flaws in web applications, where input data is not properly sanitized before being rendered in web pages.
The technical implementation of this vulnerability occurs when the plugin fails to adequately validate and sanitize user-supplied data during the generation of event post pages. Attackers can exploit this weakness by injecting malicious JavaScript code into input fields that are then stored within the plugin's database or processing systems. When other users view the affected event posts, the stored malicious scripts execute in their browsers, potentially leading to session hijacking, data theft, or further exploitation of the compromised systems. The stored nature of this XSS vulnerability means that the malicious code persists even after the initial injection, making it particularly dangerous as it can affect multiple users over extended periods.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform various malicious activities including credential theft, session manipulation, and redirection to malicious websites. The vulnerability affects any user who views event posts generated by the plugin, making it a widespread concern for websites utilizing the themify-event-post functionality. Attackers can leverage this weakness to establish persistent access to user sessions, potentially gaining administrative privileges if the affected users have elevated permissions within the WordPress environment. The vulnerability also creates opportunities for phishing attacks and data exfiltration, as malicious scripts can capture user inputs and transmit them to attacker-controlled servers.
Mitigation strategies for this vulnerability should prioritize immediate patching of the themify-event-post plugin to version 1.3.5 or later, which contains the necessary security fixes. Administrators should implement comprehensive input validation and output encoding mechanisms to prevent similar issues in the future, ensuring that all user-supplied data undergoes proper sanitization before being processed or displayed. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting the sources from which scripts can be loaded. Security monitoring should be enhanced to detect unusual patterns in event post creation and viewing activities, while regular security audits of third-party plugins should be conducted to identify potential vulnerabilities. Organizations should also consider implementing web application firewalls and regular security assessments to maintain robust protection against similar cross-site scripting threats that align with ATT&CK technique T1059.002 for command and scripting interpreter usage.