CVE-2025-26736 in MorningTime Lite Plugin
Summary
by MITRE • 03/27/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in viktoras MorningTime Lite allows Stored XSS.This issue affects MorningTime Lite: from n/a through 1.3.2.
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Analysis
by VulDB Data Team • 03/27/2025
This vulnerability represents a critical cross-site scripting flaw in the MorningTime Lite plugin that enables attackers to execute malicious scripts in the context of affected user sessions. The issue stems from inadequate input validation and sanitization during web page generation processes, allowing malicious payloads to be stored and subsequently executed when users view affected pages. The vulnerability specifically affects versions of the plugin ranging from the initial release through version 1.3.2, indicating a prolonged window of exposure for affected systems.
The technical implementation of this stored cross-site scripting vulnerability occurs when user input is not properly sanitized before being rendered in web pages. Attackers can inject malicious javascript code through input fields or parameters that are subsequently stored in the application's database or configuration files. When legitimate users access pages containing this stored malicious content, their browsers execute the injected scripts, potentially leading to session hijacking, credential theft, or redirection to malicious sites. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to establish persistent access to user sessions and potentially escalate privileges within the affected WordPress environment. An attacker who successfully exploits this vulnerability can manipulate the affected website's functionality, steal cookies, access user data, or even gain administrative control if the affected users have elevated privileges. The stored nature of this XSS means that the malicious code remains active until manually removed, creating a persistent threat vector that can affect multiple users over extended periods.
Mitigation strategies should include immediate patching to version 1.3.3 or later, which addresses the input sanitization issues. Additionally, administrators should implement comprehensive input validation and output encoding mechanisms throughout the application. The principle of least privilege should be enforced by ensuring that user input is properly escaped before rendering in HTML contexts. Security monitoring should be enhanced to detect unusual input patterns that might indicate exploitation attempts. This vulnerability aligns with ATT&CK technique T1566 which covers social engineering tactics involving malicious content delivery, and T1059 which encompasses script execution through various vectors including web-based attacks. Organizations should also consider implementing web application firewalls and content security policies to provide additional defense-in-depth measures against similar vulnerabilities.