CVE-2025-23522 in HM Portfolio Plugin
Summary
by MITRE • 01/24/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in humanmade limited, Joe Hoyle, Tom Wilmott, Matthew Haines-Young HM Portfolio allows Reflected XSS. This issue affects HM Portfolio: from n/a through 1.1.1.
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Analysis
by VulDB Data Team • 02/09/2025
This cross-site scripting vulnerability exists within the HM Portfolio plugin for WordPress, specifically affecting versions from the initial release through 1.1.1. The flaw resides in the improper neutralization of input during web page generation, creating a reflected XSS attack vector that allows malicious actors to inject client-side scripts into web pages viewed by other users. The vulnerability stems from insufficient sanitization of user-supplied data that is directly incorporated into dynamically generated web content without proper encoding or validation mechanisms.
The technical implementation of this flaw demonstrates a classic reflected XSS pattern where user input parameters are not adequately filtered or escaped before being rendered in HTML output. Attackers can craft malicious URLs containing script payloads that, when executed by victims' browsers, can perform actions such as stealing session cookies, redirecting users to malicious sites, or executing unauthorized commands on behalf of the victim. The vulnerability is particularly concerning because it affects the plugin's core functionality for portfolio management, where user input is frequently processed and displayed in web interfaces. This issue maps to CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that allows malicious scripts to be executed in the context of other users.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attack chains that compromise user sessions and potentially lead to complete account takeover. An attacker could exploit this vulnerability by sending crafted links via phishing emails or social engineering tactics to unsuspecting users who have the affected plugin installed. The reflected nature of the vulnerability means that the malicious script is not stored on the server but is instead reflected back to the user through the web application's response, making it particularly difficult to detect and prevent. This vulnerability affects the broader WordPress ecosystem and could potentially be leveraged as part of larger attack campaigns targeting WordPress installations with the HM Portfolio plugin. The impact is particularly severe for users who manage sensitive portfolio content or have administrative privileges within their WordPress environments.
Mitigation strategies should prioritize immediate patching of the affected plugin to version 1.1.2 or later, which should contain the necessary input sanitization fixes. Administrators should also implement proper content security policies to limit script execution capabilities in web browsers, though this serves as a secondary defense measure. Input validation should be strengthened at multiple layers including client-side and server-side processing, with all user-supplied data being properly escaped before insertion into HTML contexts. Security monitoring should be enhanced to detect unusual patterns of script injection attempts, and regular security audits should be conducted to identify similar vulnerabilities in other plugins or themes. The vulnerability demonstrates the importance of following secure coding practices as outlined in the OWASP Top Ten and aligns with ATT&CK technique T1203 - Exploitation for Client Execution, emphasizing the need for comprehensive security controls throughout the application lifecycle.