CVE-2024-34694: LNbits improperly handles potential network and payment failures when using Eclair backend

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-14 · updated 2026-06-17
Weakness: CWE-754

Description

LNbits is a Lightning wallet and accounts system. Paying invoices in Eclair that do not get settled within the internal timeout (about 30s) lead to a payment being considered failed, even though it may still be in flight. This vulnerability can lead to a total loss of funds for the node backend. This vulnerability is fixed in 0.12.6.

Affected products

lnbits: before 0.12.6 — fixed in 0.12.6

How to fix

Upgrade to a fixed version: lnbits 0.12.6. Check the vendor advisory for mitigations.

References

https://github.com/lnbits/lnbits/security/advisories/GHSA-3j4h-h3fp-vwww
https://github.com/lnbits/lnbits/security/advisories/GHSA-3j4h-h3fp-vwww

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