CVE-2025-57887 is a Stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting the NooTheme Jobmonster product up to version 4.8.0. This vulnerability arises due to improper neutralization of input during web page generation, allowing malicious scripts to be stored and subsequently executed in the context of users' browsers when they access affected pages. The vulnerability requires an attacker with at least low privileges (PR:L) and some user interaction (UI:R) to exploit, but it can lead to significant consequences including partial compromise of confidentiality, integrity, and availability. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vector string (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) shows that the attack can be performed remotely over the network with low attack complexity, requires some privileges and user interaction, and impacts confidentiality, integrity, and availability to a limited extent but with a scope change (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. Stored XSS vulnerabilities are particularly dangerous because they allow persistent malicious payloads that can affect multiple users, potentially leading to session hijacking, credential theft, or unauthorized actions on behalf of users. No patches or exploit code are currently publicly available, and no known exploits in the wild have been reported as of the publication date (August 22, 2025).

For European organizations using the Jobmonster theme by NooTheme, this vulnerability poses a risk to the security of their web applications, particularly those involved in job posting and recruitment services. Exploitation could lead to unauthorized access to user sessions, theft of sensitive personal data, or manipulation of job listings and user accounts. This can damage organizational reputation, lead to regulatory non-compliance (e.g., GDPR violations due to data leakage), and disrupt business operations. Since the vulnerability allows scope change, attackers might leverage it to escalate privileges or access other parts of the web application or backend systems. The requirement for low privileges and user interaction means that insider threats or compromised user accounts could facilitate exploitation. Given the widespread use of WordPress themes like Jobmonster in European SMEs and recruitment agencies, the impact could be significant if not mitigated promptly.

1. Immediate action should include auditing all instances of Jobmonster theme installations to identify affected versions (up to 4.8.0). 2. Although no official patches are currently available, organizations should monitor NooTheme and trusted vulnerability databases for updates or security patches and apply them promptly once released. 3. Implement Web Application Firewalls (WAFs) with rules to detect and block common XSS payloads targeting Jobmonster endpoints. 4. Conduct input validation and output encoding on all user-supplied data fields within the Jobmonster theme, especially those that generate web page content, to neutralize malicious scripts. 5. Limit user privileges strictly to reduce the risk of low-privilege accounts being used for exploitation. 6. Educate users about the risks of interacting with suspicious links or content within the platform to reduce the likelihood of user interaction-based exploitation. 7. Regularly scan web applications with specialized tools to detect stored XSS vulnerabilities and remediate findings. 8. Consider isolating the Jobmonster application environment or restricting access to trusted networks until patches are available.