CVE-2026-65763 in Phoca Maps Extension
Summary
by MITRE • 07/23/2026
Joomla Extension - phoca.cz - Reflected XSS vulnerability in Phoca Maps 1.0.0-6.0.9 - Improper validation of user inputs lead to a reflective XSS vulnerability.
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Analysis
by VulDB Data Team • 07/23/2026
The Joomla extension Phoca Maps version 1.0.0 through 6.0.9 contains a reflected cross-site scripting vulnerability that arises from inadequate input validation mechanisms within the component's codebase. This vulnerability specifically affects the phoca.cz extension which is commonly used for mapping functionalities within Joomla content management systems. The flaw manifests when user-supplied data is not properly sanitized before being returned in HTTP responses, creating an opportunity for malicious actors to inject arbitrary JavaScript code that executes in the context of other users' browsers.
The technical implementation of this vulnerability stems from improper handling of GET parameters and user input fields within the extension's mapping interface. When users interact with the map functionality or provide coordinates, search terms, or other parameters through the web interface, these inputs are processed without sufficient sanitization measures. The vulnerability is classified as CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') which represents one of the most prevalent and dangerous web application security flaws. Attackers can craft malicious URLs containing script payloads that, when executed by unsuspecting users who click on them, can steal session cookies, perform unauthorized actions, or redirect users to malicious websites.
The operational impact of this reflected XSS vulnerability extends beyond simple data theft, as it can enable attackers to escalate privileges within the targeted Joomla environment. When exploited successfully, the vulnerability allows threat actors to execute JavaScript code in the context of authenticated users' browsers, potentially leading to full account compromise or privilege escalation attacks. The reflected nature of the vulnerability means that the malicious payload must be delivered through external means such as email phishing campaigns, social engineering tactics, or compromised websites, where users are tricked into clicking on malicious links. This makes the attack vector particularly dangerous in enterprise environments where users may interact with multiple systems and have elevated privileges within the Joomla installation.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the extension's codebase. The recommended approach involves sanitizing all user inputs using proper HTML entity encoding before rendering them in web pages, implementing Content Security Policy headers to restrict script execution, and utilizing parameterized queries or validated input filters. Organizations should also consider applying immediate patches from the extension developers or upgrading to versions that have addressed this vulnerability. According to ATT&CK framework tactic T1566 - Phishing, this vulnerability represents a significant attack surface that threat actors can leverage for initial access and credential theft. The security community emphasizes that this type of vulnerability should be addressed through defense-in-depth strategies including web application firewalls, regular security assessments, and comprehensive user education about suspicious links and email attachments.
The broader implications of this vulnerability within the Joomla ecosystem highlight the critical importance of secure coding practices and regular security audits for third-party extensions. Many organizations rely on third-party components to extend their Joomla functionality, but these extensions often receive less security scrutiny than core CMS components, creating potential attack vectors that can compromise entire systems. The vulnerability serves as a reminder that even seemingly simple mapping functionalities can introduce complex security risks when proper input validation and sanitization measures are not implemented. Security teams should maintain comprehensive inventories of all installed extensions and regularly verify their security status through vulnerability scanning tools and manual code reviews to prevent similar issues from affecting production environments.