CVE-2026-119757

CRITICAL 9.8

BTCPay Server < 2.4.2 LND Macaroon Credential File Disclosure

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-552 CWE-522
Vendor	btcpay server
Product	btcpay server
Published	Nov 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

BTCPay Server / BTCPay Server

0 < 2.4.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

blog.btcpayserver.org: https://blog.btcpayserver.org/security-advisory-btcpay-server-2-4-2/ binance.com: https://www.binance.com/en/square/post/384812445203404 vulncheck.com: https://www.vulncheck.com/advisories/btcpay-server-lnd-macaroon-credential-file-disclosure

Credits

Craig Raw Team Red