CVE-2025-58625 in WP Flow Plus Plugin
Summary
by MITRE • 09/03/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Spiffy Plugins WP Flow Plus allows Stored XSS. This issue affects WP Flow Plus: from n/a through 5.2.5.
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Analysis
by VulDB Data Team • 09/03/2025
The CVE-2025-58625 vulnerability represents a critical cross-site scripting flaw in the WP Flow Plus plugin developed by Spiffy Plugins, specifically impacting versions ranging from an unspecified initial version through 5.2.5. This vulnerability falls under the category of improper input neutralization during web page generation, creating a persistent security risk that allows attackers to execute malicious scripts in the context of affected users' browsers. The stored nature of this XSS vulnerability means that malicious code can be permanently injected into the application's database and subsequently executed whenever affected pages are rendered, making it particularly dangerous for content management systems where user-generated content is prevalent.
The technical flaw stems from insufficient sanitization and validation of user input within the plugin's web page generation mechanisms. When users submit data through forms or other interactive elements within the WP Flow Plus interface, the application fails to properly escape or encode special characters that could be interpreted as HTML or JavaScript code. This allows attackers to inject malicious payloads that are then stored in the database and executed whenever legitimate users access pages containing the compromised data. The vulnerability is classified as a CWE-79 (Cross-site Scripting) under the Common Weakness Enumeration framework, specifically manifesting as a stored XSS attack vector that bypasses normal security controls designed to prevent such code injection.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the ability to perform a wide range of malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious websites. Attackers can exploit this vulnerability to steal administrator credentials, modify content, inject malware, or establish persistent backdoors within the affected WordPress environment. The stored nature of the vulnerability means that even if the initial injection occurs at a specific time, the malicious code continues to execute for all users who access the affected pages until the vulnerability is patched and the malicious content is removed from the database. This makes the vulnerability particularly dangerous in multi-user environments where administrators and regular users may be affected simultaneously.
Mitigation strategies for CVE-2025-58625 should prioritize immediate patching of the WP Flow Plus plugin to version 5.2.6 or later, as this represents the first fixed release addressing the XSS vulnerability. Organizations should also implement input validation and output encoding mechanisms at multiple layers of their web applications to prevent similar issues from occurring in other components. Security measures should include regular security audits of third-party plugins, implementation of web application firewalls, and monitoring for suspicious user activity or unauthorized content modifications. The vulnerability aligns with ATT&CK technique T1566.001 (Phishing with Malicious Attachments) and T1059.001 (Command and Scripting Interpreter) as attackers can leverage the XSS to establish persistent access and execute commands within the victim's browser context. Additionally, implementing Content Security Policy headers and regular security scanning of the WordPress installation can provide additional defense-in-depth measures to protect against exploitation of similar vulnerabilities.