CVE-2025-57947 is a DOM-based Cross-Site Scripting (XSS) vulnerability identified in the Ays Pro Photo Gallery software, specifically affecting versions up to 6.3.6. This vulnerability arises due to improper neutralization of input during web page generation, categorized under CWE-79. DOM-based XSS occurs when client-side scripts write untrusted data to the Document Object Model (DOM) without proper sanitization, allowing attackers to inject malicious scripts that execute in the context of the victim's browser. In this case, the vulnerability allows an attacker with at least low privileges (PR:L) and requiring user interaction (UI:R) to craft malicious input that, when processed by the application, results in script execution. The CVSS 3.1 score of 6.5 reflects a medium severity, indicating a moderate risk. The vulnerability impacts confidentiality, integrity, and availability to a limited extent, as it can lead to theft of session tokens, defacement, or redirection to malicious sites. The scope is changed (S:C), meaning the vulnerability can affect components beyond the initially vulnerable module. Exploitation requires network access (AV:N) and low attack complexity (AC:L), but user interaction is necessary. No known exploits are currently reported in the wild, and no patches have been published yet. The vulnerability is specific to the Ays Pro Photo Gallery product, a web-based photo gallery management system used to display and organize images on websites.

For European organizations using Ays Pro Photo Gallery, this vulnerability poses a risk of client-side attacks that can compromise user sessions, steal sensitive information, or perform unauthorized actions on behalf of users. Given the nature of DOM-based XSS, attackers can bypass some traditional server-side protections, making client environments vulnerable. This can lead to reputational damage, especially for organizations handling personal or sensitive data, such as media companies, cultural institutions, or e-commerce platforms using this gallery software. Additionally, regulatory frameworks like the GDPR impose strict requirements on data protection; exploitation of this vulnerability could lead to data breaches and consequent legal and financial penalties. The requirement for user interaction means phishing or social engineering could be used to trigger the exploit, increasing the risk to end users. The medium severity suggests that while the threat is not critical, it should be addressed promptly to avoid escalation or chaining with other vulnerabilities.

Organizations should immediately audit their use of Ays Pro Photo Gallery and identify affected versions (up to 6.3.6). Since no patches are currently available, temporary mitigations include implementing Content Security Policy (CSP) headers to restrict script execution and reduce the impact of injected scripts. Input validation and output encoding should be enforced on all user-supplied data, especially data reflected in the DOM. Web Application Firewalls (WAFs) can be configured to detect and block common XSS payloads targeting this vulnerability. User awareness training should be enhanced to reduce the risk of social engineering attacks that could trigger the exploit. Monitoring and logging of unusual client-side script behaviors can help detect exploitation attempts. Organizations should track vendor communications for patches and apply them promptly once released. Additionally, isolating the photo gallery application from critical systems and limiting user privileges can reduce potential damage.