CVE-2025-62077 in Affiliate Link Tracker Plugin
Summary
by MITRE • 01/22/2026
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in SEOSEON EUROPE S.L Affiliate Link Tracker affiliate-link-tracker allows Stored XSS.This issue affects Affiliate Link Tracker: from n/a through <= 0.2.
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Analysis
by VulDB Data Team • 01/22/2026
The vulnerability identified as CVE-2025-62077 represents a critical cross-site scripting weakness within the SEOSEON EUROPE S.L Affiliate Link Tracker plugin, specifically affecting versions up to and including 0.2. This flaw 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 user sessions. The vulnerability stems from insufficient sanitization of user-supplied input data that is subsequently rendered in web pages without proper encoding or validation mechanisms.
The technical implementation of this stored cross-site scripting vulnerability occurs when user-provided data is accepted through the affiliate link tracking functionality and subsequently stored within the application's database or processing system. When this data is later retrieved and displayed in web interfaces, the malicious input is executed as script code within the browser context of unsuspecting users. This stored nature of the vulnerability means that the malicious payload persists and can affect multiple users over time, rather than requiring a specific user interaction to trigger the attack vector. The flaw directly corresponds to CWE-79, which defines cross-site scripting as a weakness where untrusted data is incorporated into web pages without proper validation or encoding, making it a fundamental web application security issue.
The operational impact of this vulnerability extends beyond simple script execution, potentially allowing attackers to hijack user sessions, steal sensitive cookies, redirect users to malicious websites, or extract confidential information from authenticated sessions. In the context of an affiliate link tracking system, this could enable attackers to manipulate tracking data, redirect affiliate commissions to malicious links, or gain unauthorized access to affiliate marketing metrics and user information. The stored nature of the vulnerability means that any user who views pages containing the malicious input is at risk, potentially affecting multiple stakeholders including affiliate marketers, website administrators, and end-users who encounter the compromised tracking data.
Security professionals should implement immediate mitigations including input validation and output encoding for all user-supplied data within the affiliate link tracking functionality. The recommended approach involves sanitizing all input through proper validation mechanisms and encoding output data before rendering it in web pages, following established secure coding practices. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against script execution, while regular security audits of web applications should include thorough testing for cross-site scripting vulnerabilities. The remediation process should involve updating the plugin to a version that properly addresses the input sanitization issues, as specified in the vendor's security advisory. This vulnerability aligns with ATT&CK technique T1531 which focuses on credential access through manipulation of web applications, and demonstrates the importance of proper input validation in preventing persistent security flaws that can affect multiple users over extended periods.