What is CVE-2026-119757?

CVE-2026-119757 is a critical-severity vulnerability in Btcpay Server, classified under Insufficiently Protected Credentials. CVSS score: 9.8/10. Published 2026-11-05.

How severe is CVE-2026-119757?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Btcpay Server

CVE-2026-119757

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.

Published 2026-11-05.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Btcpay Server

Weakness classification (CWE)

References

Vendor Advisory (vendor-advisory, patch)
Exploitation Announcement (technical-description)
VulnCheck Advisory: BTCPay Server < 2.4.2 LND Macaroon Credential File Disclosure (third-party-advisory)

Frequently asked questions

What is CVE-2026-119757?: CVE-2026-119757 is a critical-severity vulnerability in Btcpay Server, classified under Insufficiently Protected Credentials. CVSS score: 9.8/10. Published 2026-11-05.
How severe is CVE-2026-119757?: Critical severity. CVSS v3 base score is 9.8 out of 10.