CVE-2026-61989 in Easy Property Listings Plugin
Summary
by MITRE • 10/29/2026
Unauthenticated Cross Site Scripting (XSS) in Easy Property Listings <= 3.5.25 versions.
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Analysis
by VulDB Data Team • 10/29/2026
The vulnerability identified as an unauthenticated cross-site scripting flaw within Easy Property Listings versions prior to or equal to 3.5.25 represents a significant security risk for websites utilizing this WordPress plugin. This specific weakness allows attackers to inject malicious client-side scripts into web pages viewed by other users without requiring any form of authentication, such as login credentials. The core technical issue stems from insufficient input validation and output encoding mechanisms within the application code. When user-supplied data is processed or displayed, the system fails to properly sanitize special characters that have semantic meaning in HTML and JavaScript contexts. This oversight enables an attacker to craft a malicious payload containing script tags or event handlers that are executed by the victim's web browser upon rendering the affected page.
From a technical perspective, this vulnerability aligns with CWE-79, which classifies improper neutralization of input during web page generation as Cross-site Scripting. The absence of authentication for this attack vector is particularly concerning because it lowers the barrier to entry significantly. Unlike authenticated vulnerabilities that require an attacker to first compromise valid user credentials, unauthenticated XSS can be exploited by any anonymous internet user who discovers a vulnerable endpoint or parameter within the plugin's functionality. This could involve manipulating query parameters in URLs, form inputs, or other data points where the application directly reflects user input back into the response without adequate sanitization. The attacker constructs a URL containing the malicious script and distributes it through various channels such as email, social media, or embedded links on third-party sites.
The operational impact of this vulnerability is severe due to its potential for widespread exploitation. Once executed in the victim's browser, the injected scripts operate within the security context of the vulnerable website. This allows attackers to perform a variety of malicious actions including session hijacking by stealing authentication cookies and tokens stored locally on the user's device. It also facilitates credential harvesting through phishing techniques where fake login forms are dynamically generated via JavaScript overlaying legitimate pages. Furthermore, this vulnerability can be leveraged for defacement attacks or as an initial access vector to launch more complex multi-stage attacks against users who have higher privilege levels within the application ecosystem. The lack of authentication means that even visitors with no prior interaction history can trigger these malicious scripts, expanding the potential attack surface considerably.
In terms of industry frameworks, this vulnerability maps directly to MITRE ATT&CK technique T1059 which covers Command and Scripting Interpretation, specifically through browser-based execution via XSS. It also relates to TA0006 Credential Access as attackers can steal session tokens to impersonate legitimate users. The unauthenticated nature places it in the initial access phase of an attack lifecycle if combined with social engineering tactics designed to trick victims into visiting malicious links. Organizations relying on this plugin must recognize that client-side vulnerabilities often serve as gateways for broader system compromise, especially when sensitive data or administrative functions are accessible through compromised sessions.
Mitigation strategies should prioritize immediate remediation by upgrading the Easy Property Listings plugin to version 3.5.26 or later where these input validation issues have been addressed. Developers and administrators must ensure that all updates are applied promptly as vendors typically release patches for critical vulnerabilities like XSS shortly after disclosure. In addition to patching, implementing a Web Application Firewall can provide an additional layer of defense by filtering out known malicious patterns associated with script injection attempts before they reach the application logic. Security teams should also conduct regular code reviews focusing on input validation and output encoding practices to prevent similar flaws in custom development or other plugins. Monitoring server logs for unusual activity related to URL parameters containing encoded script tags can help detect exploitation attempts in real-time, allowing for rapid incident response even if a vulnerability remains unpatched temporarily.