CVE-2025-24645 is a high-severity reflected Cross-site Scripting (XSS) vulnerability identified in the Rob Scott Eazy Under Construction plugin, versions up to 1.0. The vulnerability stems from improper neutralization of user input during web page generation, classified under CWE-79. Specifically, the plugin fails to adequately sanitize or encode user-supplied data before reflecting it back in HTTP responses, allowing attackers to inject malicious scripts. When a victim accesses a crafted URL containing the malicious payload, the injected script executes in the victim's browser context. This can lead to theft of session cookies, credential theft, unauthorized actions on behalf of the user, or redirection to malicious sites. The CVSS v3.1 base score is 7.1, reflecting a network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The scope is changed (S:C), indicating the vulnerability can affect resources beyond the vulnerable component. The impact affects confidentiality, integrity, and availability at a low level, consistent with typical reflected XSS risks. No patches or known exploits in the wild are currently reported. The vulnerability was reserved in January 2025 and published in April 2025. The plugin is typically used to display 'under construction' or maintenance pages on websites, often in WordPress environments or similar CMS platforms. The lack of patches suggests users must apply manual mitigations or await vendor updates.

For European organizations, this vulnerability poses a significant risk especially for websites using the Eazy Under Construction plugin to manage maintenance or landing pages. Exploitation could allow attackers to execute arbitrary JavaScript in the context of the affected site, potentially leading to session hijacking, defacement, or phishing attacks targeting employees or customers. This could result in data leakage, reputational damage, and compliance violations under GDPR if personal data is compromised. Since the plugin is often used on public-facing web assets, the attack surface is broad. The reflected XSS nature requires user interaction, typically via social engineering or crafted links, but the low complexity and no privilege requirement make exploitation feasible. The changed scope indicates that the vulnerability could impact other components or services linked to the vulnerable page, increasing risk. European organizations with customer-facing websites or intranet portals utilizing this plugin are at risk of targeted attacks or opportunistic exploitation, especially in sectors with high regulatory scrutiny or valuable data assets.

1. Immediate mitigation involves disabling or removing the Eazy Under Construction plugin until a vendor patch is available. 2. If removal is not feasible, implement a Web Application Firewall (WAF) with rules to detect and block reflected XSS payloads targeting the plugin’s endpoints. 3. Employ Content Security Policy (CSP) headers to restrict script execution sources and reduce impact of injected scripts. 4. Sanitize and encode all user inputs and outputs rigorously, especially URL parameters reflected in pages. 5. Educate users and administrators about the risks of clicking untrusted links and implement link scanning in email gateways to detect malicious URLs. 6. Monitor web server logs for suspicious requests containing script tags or typical XSS payload patterns. 7. Plan for prompt patching once the vendor releases an update addressing this vulnerability. 8. Conduct security testing and code review of customizations related to the plugin to ensure no additional injection points exist.