CVE-2025-57913 is a Stored Cross-site Scripting (XSS) vulnerability classified under CWE-79, affecting the eleopard Behance Portfolio Manager software up to version 1.7.4. This vulnerability arises due to improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be stored and subsequently executed in the context of other users' browsers. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. The attack vector is network-based (AV:N), with low attack complexity (AC:L), but requires privileges (PR:L) and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability at a low level (C:L, I:L, A:L). Stored XSS can enable attackers to steal session tokens, perform actions on behalf of authenticated users, or deliver further payloads such as malware. Although no known exploits are currently reported in the wild, the vulnerability's presence in a portfolio management tool used for creative and professional content presentation poses risks to user data and organizational reputation. The lack of available patches at the time of publication increases exposure risk until mitigations or updates are applied.

For European organizations using eleopard Behance Portfolio Manager, this vulnerability could lead to unauthorized access to user accounts, data leakage, and potential defacement or manipulation of portfolio content. Given that portfolio managers often contain sensitive professional information and client data, exploitation could result in reputational damage and loss of trust. The medium severity score reflects the need for some privileges and user interaction, which may limit mass exploitation but still poses a significant risk in targeted attacks. Organizations in sectors such as creative agencies, freelancers, and marketing firms in Europe that rely on this software for showcasing work may face operational disruptions and compliance challenges, especially under GDPR requirements concerning data protection and breach notification.

Specific mitigation steps include: 1) Immediate review and sanitization of all user inputs in the Behance Portfolio Manager, employing context-aware output encoding to prevent script injection. 2) Implement Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts. 3) Restrict user privileges to the minimum necessary to reduce the risk of exploitation requiring elevated permissions. 4) Monitor and audit logs for unusual activities indicative of XSS exploitation attempts. 5) Educate users about the risks of interacting with suspicious links or content within the platform. 6) Engage with the vendor or community to obtain or develop patches addressing this vulnerability. 7) If possible, isolate the portfolio manager environment or deploy web application firewalls (WAFs) with rules targeting XSS payloads as a temporary protective measure until official patches are available.