CVE-2025-49269 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the Anton Vanyukov Market Exporter software, affecting versions up to and including 2.0.22. CSRF vulnerabilities occur when an attacker tricks an authenticated user into submitting a malicious request to a web application in which the user is currently authenticated, thereby performing unwanted actions without the user's consent. In this case, the Market Exporter application does not sufficiently validate the origin or authenticity of requests, allowing an attacker to craft a malicious link or form that, when visited or submitted by an authenticated user, can trigger unintended state-changing operations. The vulnerability has a CVSS v3.1 base score of 4.3, indicating a medium severity level. The vector string (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) shows that the attack can be performed remotely over the network with low attack complexity, requires no privileges, but does require user interaction (such as clicking a link). The impact is limited to integrity, meaning the attacker can cause unauthorized changes but cannot access confidential data or disrupt availability. No known exploits are currently reported in the wild, and no patches have been linked yet. This vulnerability is classified under CWE-352, which covers CSRF issues generally caused by missing or inadequate anti-CSRF tokens or validation mechanisms in web applications.

For European organizations using Anton Vanyukov Market Exporter, this CSRF vulnerability poses a risk of unauthorized modification of data or settings within the application. While it does not allow data disclosure or denial of service, integrity violations could lead to incorrect market data exports, manipulation of export parameters, or unauthorized triggering of export operations. This could disrupt business processes relying on accurate market data exports, potentially causing financial inaccuracies or operational inefficiencies. Since the attack requires user interaction, phishing or social engineering campaigns targeting employees could be used to exploit this vulnerability. Organizations in sectors such as finance, retail, or supply chain management that depend on Market Exporter for critical data workflows may face increased risk. Additionally, regulatory compliance frameworks in Europe, such as GDPR, emphasize data integrity and security, so exploitation could lead to compliance issues if data manipulation affects personal or sensitive information.

European organizations should implement several specific measures to mitigate this CSRF vulnerability beyond generic advice: 1) Apply strict Content Security Policy (CSP) headers to reduce the risk of malicious cross-origin requests. 2) Employ anti-CSRF tokens in all state-changing requests within the Market Exporter application, ensuring tokens are unique per session and validated server-side. 3) Enforce SameSite cookie attributes (preferably 'Strict' or 'Lax') to limit cookie transmission in cross-site contexts. 4) Educate users about phishing and social engineering risks to reduce the likelihood of inadvertent interaction with malicious links. 5) Monitor application logs for unusual or unexpected export requests that could indicate exploitation attempts. 6) If possible, restrict Market Exporter access to trusted internal networks or VPNs to reduce exposure. 7) Coordinate with the vendor or development team to obtain or develop patches or updates addressing this vulnerability. 8) Implement multi-factor authentication (MFA) to reduce the risk of session hijacking that could compound CSRF risks.