CVE-2025-23699 in Event Countdown Timer Plugin
Summary
by MITRE • 01/16/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in TechMix Event Countdown Timer Plugin by TechMix allows Reflected XSS.This issue affects Event Countdown Timer Plugin by TechMix: from n/a through 1.4.
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Analysis
by VulDB Data Team • 02/10/2025
The CVE-2025-23699 vulnerability represents a critical cross-site scripting flaw in the TechMix Event Countdown Timer WordPress plugin, specifically impacting versions ranging from the initial release through 1.4. This vulnerability falls under the Common Weakness Enumeration category CWE-79, which classifies improper neutralization of input during web page generation as a fundamental web application security weakness. The flaw enables attackers to inject malicious scripts into web pages viewed by other users, creating a persistent threat vector that can compromise user sessions and data integrity.
The technical implementation of this reflected cross-site scripting vulnerability occurs when the plugin fails to properly sanitize or escape user-supplied input parameters before incorporating them into dynamically generated web content. When a user visits a page that includes maliciously crafted input through URL parameters or form fields, the plugin processes this unvalidated data without appropriate output encoding or validation. This allows an attacker to inject malicious JavaScript code that executes in the context of the victim's browser, potentially stealing session cookies, redirecting users to malicious sites, or performing unauthorized actions on behalf of authenticated users.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attack chains within the WordPress ecosystem. Attackers can leverage this flaw to establish persistent access to compromised sites, manipulate event countdown displays, or even escalate privileges if the plugin operates with elevated permissions. The reflected nature of the vulnerability means that the malicious payload must be delivered through external means such as phishing emails, compromised websites, or social engineering campaigns that direct users to specifically crafted URLs. This makes the attack vector particularly dangerous in environments where users frequently click on links from untrusted sources.
Mitigation strategies for CVE-2025-23699 should prioritize immediate plugin updates to versions that address the input validation and output encoding deficiencies. System administrators should implement comprehensive input validation mechanisms that sanitize all user-supplied data before processing, particularly focusing on URL parameters and form inputs that feed into dynamic content generation. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, though they should not replace proper code-level fixes. Security monitoring should include detection of suspicious URL patterns and unexpected script execution within affected sites. Organizations should also consider implementing content security policies to limit script execution and reduce the impact of potential exploitation attempts. The vulnerability demonstrates the critical importance of input validation and output encoding practices as outlined in the OWASP Top Ten and aligns with ATT&CK technique T1059.007 for scripting and T1566 for phishing attacks that could leverage this weakness.