CVE-2025-57908 is a medium severity Stored Cross-Site Scripting (XSS) vulnerability identified in the ProWCPlugins Product Time Countdown plugin for WooCommerce, affecting versions up to and including 1.6.4. The vulnerability arises from improper neutralization of input during web page generation (CWE-79), allowing malicious actors to inject and store arbitrary JavaScript code within the plugin's data fields. When a victim user accesses the affected page, the malicious script executes in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the user. The CVSS 3.1 base score is 5.9, reflecting a network attack vector with low attack complexity, but requiring high privileges and user interaction. The scope is changed, indicating that the vulnerability affects components beyond the initially vulnerable module, potentially impacting the broader WooCommerce environment. No known exploits are currently reported in the wild, and no official patches have been published yet. The vulnerability is particularly relevant for e-commerce sites using WooCommerce with this specific plugin, which is designed to display countdown timers for product availability or promotions. Stored XSS is more dangerous than reflected XSS because the malicious payload persists on the server and can affect multiple users over time. Attackers with high privileges (e.g., administrators or editors) can inject payloads that execute in the context of other users, including customers and site administrators, potentially leading to privilege escalation or data leakage.

For European organizations operating e-commerce platforms using WooCommerce with the Product Time Countdown plugin, this vulnerability poses a tangible risk to customer data confidentiality and platform integrity. Exploitation could allow attackers to steal session cookies, manipulate user accounts, or inject fraudulent content, undermining customer trust and potentially violating GDPR requirements related to data protection and breach notification. The availability of the e-commerce service could also be impacted if attackers use the vulnerability to execute denial-of-service or defacement attacks. Given the widespread use of WooCommerce in Europe, especially among small and medium-sized enterprises (SMEs), the vulnerability could have broad implications, including financial losses, reputational damage, and regulatory penalties. The requirement for high privileges to exploit the vulnerability somewhat limits the attack surface but does not eliminate risk, as insider threats or compromised administrator accounts could be leveraged. Additionally, user interaction is required, meaning phishing or social engineering could be used to trigger the exploit. The lack of known exploits in the wild provides a window for mitigation before widespread attacks occur.

European organizations should immediately audit their WooCommerce installations to identify the presence of the Product Time Countdown plugin and verify the version in use. Until an official patch is released, administrators should consider disabling or removing the plugin to eliminate exposure. Implement strict input validation and output encoding on all user-supplied data fields related to the plugin to prevent injection of malicious scripts. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in the browser context. Regularly review user privileges and enforce the principle of least privilege to minimize the risk of high-privilege account compromise. Conduct security awareness training to reduce the risk of social engineering attacks that could facilitate exploitation. Monitor web server and application logs for unusual activity indicative of attempted XSS exploitation. Once a patch becomes available, prioritize its deployment in all affected environments. Additionally, consider implementing Web Application Firewalls (WAFs) with rules tuned to detect and block XSS payloads targeting WooCommerce plugins.