{"id":"CVE-2026-119757","published":"2026-11-05T22:17:53.203","lastModified":"2026-11-05T22:17:53.203","description":"BTCPay Server before 2.4.2, including 2.4.2 release candidates, contains an information disclosure vulnerability that allows unauthenticated remote attackers to retrieve .macaroon credential files for an LND (Lightning Network Daemon) node. Attackers can use the exposed macaroon to gain full control of the LND node, including moving funds, resulting in theft of funds from affected deployments.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-522","CWE-552"],"vendors":[],"products":[],"references":[{"url":"https://blog.btcpayserver.org/security-advisory-btcpay-server-2-4-2/","tags":[]},{"url":"https://www.binance.com/en/square/post/384812445203404","tags":[]},{"url":"https://www.vulncheck.com/advisories/btcpay-server-lnd-macaroon-credential-file-disclosure","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"BTCPay Server before 2.4.2 exposes unauthenticated access to .macaroon credential files for LND nodes, allowing remote attackers to obtain highly privileged authentication tokens without credentials.","exploitability":"Trivial to exploit; requires only an HTTP request to a publicly accessible endpoint with no authentication, authorization, or user interaction.","blast_radius":"Full compromise of the LND node including theft of all funds under its control, potentially affecting multiple users' wallets and undermining trust in the BTCPay Server deployment.","remediation":"Upgrade to BTCPay Server version 2.4.2 or later, which patches the vulnerability by restricting access to .macaroon files.","detection":"Look for HTTP GET requests to paths ending in .macaroon from unauthenticated sessions (e.g., missing Authorization header) in web server logs; such requests should never succeed.","tags":["information-disclosure","credential-theft","lnd","macaroon","no-auth","web"],"model":"garnet-coder","analyzedAt":"2026-11-06T09:45:24.375Z"}}