CVE-2026-3041 identifies a cross-site scripting (XSS) vulnerability in the BaykeShop e-commerce platform developed by xingfuggz, affecting all versions up to 1.3.20. The flaw exists in the Article Sidebar Module, specifically within the file src/baykeshop/contrib/article/templates/baykeshop/sidebar/custom.html. The vulnerability stems from insufficient sanitization or encoding of the sidebar.content parameter, which is manipulated by attackers to inject arbitrary JavaScript code. This injection can be triggered remotely without authentication, but requires user interaction, such as a victim clicking a malicious link or visiting a compromised page. The vulnerability does not affect confidentiality or availability directly but can lead to session hijacking, credential theft, or redirection to malicious sites, impacting user trust and integrity of the platform. The CVSS 4.0 vector indicates low attack complexity and no privileges required, but user interaction is necessary. The vendor has been notified but has not yet responded or issued a patch. No known exploits have been reported in the wild, but public disclosure increases the risk of exploitation attempts. The vulnerability highlights a common web application security issue where dynamic content is not properly sanitized before rendering in HTML templates, emphasizing the need for secure coding practices in input handling and output encoding.

The primary impact of this XSS vulnerability is on the integrity and confidentiality of users interacting with affected BaykeShop installations. Attackers can execute arbitrary scripts in the context of the victim’s browser, potentially stealing session cookies, redirecting users to phishing sites, or performing actions on behalf of the user. This can lead to account compromise, fraud, and reputational damage for organizations using BaykeShop. Although the vulnerability does not directly affect system availability, successful exploitation can disrupt user trust and lead to financial losses. Since the vulnerability requires user interaction, the scope of impact depends on the ability of attackers to lure users into triggering the exploit. Given BaykeShop’s role as an e-commerce platform, exploitation could affect customer data confidentiality and transactional integrity, especially in regions where the platform is widely deployed. The lack of a vendor patch increases exposure duration, raising the risk for organizations that have not implemented compensating controls.

Organizations should immediately audit their BaykeShop installations to identify affected versions (1.3.0 through 1.3.20). Until an official patch is released, implement strict input validation and output encoding on the sidebar.content parameter to neutralize malicious scripts. Employ Content Security Policy (CSP) headers to restrict execution of unauthorized scripts. Deploy Web Application Firewalls (WAFs) with rules targeting common XSS attack patterns to detect and block exploit attempts. Educate users about the risks of clicking untrusted links and monitor web server logs for suspicious activity related to sidebar content manipulation. Consider isolating or disabling the vulnerable Article Sidebar Module if feasible. Maintain close communication with the vendor for updates and apply patches promptly once available. Conduct regular security assessments and penetration tests focusing on client-side injection vectors in the BaykeShop environment.