CVE-2025-62950 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the Contest Gallery software developed by Wasiliy Strecker. This vulnerability affects all versions up to and including 28.0.0. CSRF vulnerabilities occur when an attacker tricks an authenticated user into submitting a forged HTTP request, causing the victim's browser to perform unwanted actions on a web application where they are logged in. In this case, the attacker can exploit the lack of proper CSRF protections in Contest Gallery to execute unauthorized requests on behalf of a legitimate user. The CVSS score of 4.3 reflects a medium severity, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), and limited confidentiality impact (C:L), with no impact on integrity or availability. The vulnerability does not require user interaction but does require the attacker to have some level of privileges, which limits the attack surface. No known exploits have been reported, and no patches have been explicitly linked, suggesting that organizations should proactively verify and implement CSRF protections. The vulnerability primarily threatens confidentiality by potentially exposing sensitive user data or session information through unauthorized requests. Given the nature of Contest Gallery as a platform for managing contests and galleries, unauthorized actions could include modifying contest entries or accessing restricted user data. The lack of integrity and availability impact reduces the overall severity but does not eliminate risk. The vulnerability was reserved and published in late 2025, indicating recent discovery and disclosure.

For European organizations using Contest Gallery, this vulnerability could lead to unauthorized actions performed under the guise of legitimate users, potentially exposing sensitive contest or user data. While the impact on integrity and availability is minimal, confidentiality breaches could harm user trust and violate data protection regulations such as GDPR. Organizations involved in digital content management, online competitions, or community galleries are particularly at risk. The requirement for low privileges to exploit means insider threats or compromised accounts could be leveraged to escalate attacks. Although no known exploits exist yet, the vulnerability's presence in widely used versions means attackers could develop exploits, increasing risk over time. The medium severity suggests moderate urgency but should not be ignored, especially in sectors handling personal or sensitive information. Failure to mitigate could result in reputational damage and regulatory penalties within Europe.

Organizations should immediately audit their Contest Gallery installations to determine affected versions and apply any available patches or updates once released. In the absence of official patches, implementing anti-CSRF tokens in all state-changing requests is critical. Web application firewalls (WAFs) can be configured to detect and block suspicious CSRF attempts by validating request origins and headers. Restricting privileges to the minimum necessary reduces the attack surface, as exploitation requires low privileges. Additionally, enforcing same-site cookies and enabling Content Security Policy (CSP) headers can help mitigate CSRF risks. Regular security assessments and penetration testing focused on CSRF vulnerabilities should be conducted. User education on phishing and suspicious links can reduce the likelihood of successful CSRF attacks. Monitoring logs for unusual activity related to Contest Gallery can provide early detection of exploitation attempts.