CVE-2025-46504 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the Olar Marius Vasaio QR Code product, affecting versions up to 1.2.5. This vulnerability allows an attacker to perform unauthorized actions on behalf of an authenticated user by exploiting the lack of proper CSRF protections. Specifically, the vulnerability enables Stored Cross-Site Scripting (XSS) attacks, where malicious scripts injected via crafted QR codes or related inputs are persistently stored and executed in the context of the victim's browser. The CSRF flaw facilitates the injection or triggering of these stored XSS payloads without the user’s consent or interaction beyond visiting a maliciously crafted page or scanning a malicious QR code. The vulnerability arises from insufficient validation of requests and the absence of anti-CSRF tokens or similar protective mechanisms in the affected product. Although no known exploits are currently reported in the wild, the combination of CSRF and stored XSS can lead to session hijacking, unauthorized actions, data theft, or further compromise of the affected web application or user environment. The vulnerability is categorized under CWE-352, which highlights weaknesses in request forgery protections. The product Vasaio QR Code is typically used for generating and managing QR codes, which may be integrated into web applications or services that rely on QR code functionalities. The lack of a patch or mitigation from the vendor at the time of disclosure increases the risk for organizations using this product.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Vasaio QR Code in customer-facing or internal web applications. Exploitation could lead to unauthorized actions performed under the guise of legitimate users, potentially compromising user accounts, leaking sensitive information, or enabling further attacks such as privilege escalation or malware distribution. The stored XSS component increases the risk by allowing persistent malicious scripts that can affect multiple users over time. Organizations in sectors such as finance, healthcare, retail, and government, where QR code usage is prevalent for authentication, payments, or information sharing, may face reputational damage, regulatory penalties under GDPR for data breaches, and operational disruptions. The vulnerability could also be leveraged to target employees or customers, facilitating phishing or social engineering campaigns. Given the medium severity rating and the absence of known exploits, the immediate risk is moderate but could escalate if exploit code becomes available. The impact on confidentiality, integrity, and availability is primarily through unauthorized actions and data exposure rather than direct system outages.

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Immediately review and restrict the use of Vasaio QR Code versions up to 1.2.5, considering temporary suspension if feasible until a vendor patch is available. 2) Implement web application firewall (WAF) rules to detect and block suspicious CSRF and XSS payloads related to QR code inputs. 3) Enforce strict input validation and output encoding on all QR code data processing components to prevent script injection and execution. 4) Introduce anti-CSRF tokens or same-site cookie attributes in web applications integrating Vasaio QR Code to prevent unauthorized request forgery. 5) Conduct thorough security audits and penetration testing focusing on QR code handling workflows to identify and remediate similar vulnerabilities. 6) Educate users and administrators about the risks of scanning QR codes from untrusted sources and monitor logs for unusual activities related to QR code usage. 7) Stay updated with vendor communications for patches or official mitigations and apply them promptly once available. These targeted actions go beyond generic advice by focusing on the specific attack vectors and product integration points relevant to this vulnerability.