CVE-2026-66433 in Location Weather Plugin
Summary
by MITRE • 07/27/2026
Contributor Cross Site Scripting (XSS) in Location Weather <= 3.0.6 versions.
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Analysis
by VulDB Data Team • 07/27/2026
The vulnerability under analysis represents a contributor cross site scripting flaw identified in the Location Weather plugin version 3.0.6 and earlier. This security weakness resides within the plugin's handling of user-contributed content, specifically affecting how weather data submissions are processed and displayed. The issue stems from inadequate input validation and output sanitization mechanisms that fail to properly escape or filter malicious script code embedded within contributor-submitted weather information.
The technical implementation of this vulnerability occurs when the plugin processes weather reports or user-generated content containing malicious javascript payloads. When administrators or users view these contributed weather entries, the unescaped scripts execute within the browser context of the affected website, creating a persistent cross site scripting vector. The flaw typically manifests when the plugin stores contributor data without proper sanitization and subsequently renders this data in web pages without appropriate html escaping or content security policy enforcement.
From an operational perspective this vulnerability presents significant risks to website administrators and end users. Attackers can leverage this weakness to inject malicious scripts that may steal cookies, session tokens, or other sensitive information from authenticated users. The impact extends beyond simple data theft as attackers could potentially redirect victims to phishing sites, deface the website, or establish persistent backdoors through more sophisticated attack vectors. This vulnerability affects any website utilizing the Location Weather plugin in its vulnerable versions, making it a widespread concern for wordpress installations.
The exploitation of this contributor XSS vulnerability aligns with several ATT&CK tactics including initial access through web application attacks and privilege escalation via session hijacking. From a CWE perspective this represents a classic cross site scripting flaw categorized under CWE-79, specifically manifesting as contributor XSS where user input is not properly sanitized before being rendered in web pages. The vulnerability also relates to CWE-1085 which addresses improper input sanitization in web applications.
Mitigation strategies should prioritize immediate plugin updates to versions 3.0.7 or later where the XSS vulnerability has been patched. Administrators must implement comprehensive input validation and output sanitization measures for all user-contributed content, including proper html escaping before rendering. Content security policies should be enforced to prevent execution of unauthorized scripts, while regular security audits of contributed content should be conducted. Additionally implementing web application firewalls can provide additional layers of protection against exploitation attempts, and user access controls should be reviewed to limit contributor privileges where possible.
The vulnerability demonstrates the critical importance of proper input validation in web applications and highlights how seemingly benign features like user-contributed weather data can become security attack vectors when not properly secured. Organizations should maintain up-to-date security practices including regular plugin updates, comprehensive testing procedures for third-party components, and continuous monitoring for similar vulnerabilities across their entire software ecosystem to prevent exploitation of such weaknesses.