CVE-2026-3193 identifies a cross-site request forgery (CSRF) vulnerability in Chia Blockchain version 2.1.0, specifically within the /send_transaction endpoint. CSRF vulnerabilities occur when a web application does not properly verify that requests originate from legitimate users, allowing attackers to trick authenticated users into unknowingly submitting malicious requests. In this case, the vulnerability could allow a remote attacker to cause a user to send unauthorized blockchain transactions by exploiting the lack of adequate anti-CSRF protections. The attack complexity is high, requiring crafted requests and user interaction, which reduces the likelihood of successful exploitation. The vulnerability does not require authentication but does require the user to interact with a malicious site or content. The vendor has rejected a bug bounty report citing that this behavior is by design, emphasizing that users are responsible for securing their hosts. No patches or fixes have been released, and no known exploits are currently active in the wild. The CVSS 4.0 vector indicates network attack vector, high attack complexity, no privileges required, user interaction required, and low impact on confidentiality and integrity, resulting in a low overall severity score of 2.3. This vulnerability primarily threatens transaction integrity by potentially enabling unauthorized transactions, but the difficulty of exploitation and user interaction requirement limit its practical impact.

The primary impact of CVE-2026-3193 is on the integrity of blockchain transactions within affected Chia Blockchain nodes. An attacker could trick users into unknowingly submitting unauthorized transactions, potentially resulting in financial loss or unintended asset transfers. However, the high complexity and requirement for user interaction significantly reduce the risk of widespread exploitation. Confidentiality and availability impacts are minimal, as the vulnerability does not expose sensitive data or disrupt service availability. Organizations relying on Chia Blockchain 2.1.0 may face targeted attacks aimed at manipulating transactions, especially if users are tricked into visiting malicious websites or clicking crafted links. The vendor's stance that host security is the user's responsibility means that endpoint security failures could exacerbate the risk. Overall, the threat is limited but should not be ignored in environments where transaction integrity is critical.

To mitigate CVE-2026-3193, organizations should implement several specific measures beyond generic advice: 1) Employ strict Content Security Policy (CSP) headers to restrict the sources of executable scripts and reduce the risk of malicious cross-site requests. 2) Use browser security features such as SameSite cookies set to 'Strict' or 'Lax' to prevent cookies from being sent with cross-site requests. 3) Educate users to avoid clicking on suspicious links or visiting untrusted websites while logged into Chia Blockchain interfaces. 4) Implement network-level protections such as web application firewalls (WAFs) to detect and block suspicious CSRF attempts targeting the /send_transaction endpoint. 5) Monitor blockchain transaction logs for unusual or unauthorized transactions to enable rapid detection and response. 6) Consider isolating blockchain transaction interfaces from general web browsing environments, for example by using dedicated browsers or virtual machines. 7) Stay informed about updates from the vendor and apply patches promptly if they become available. 8) Enforce endpoint security best practices, including up-to-date antivirus, anti-malware, and system hardening to reduce the risk of host compromise that could facilitate exploitation.