CVE-2020-26896

HIGH

Lightning Network Daemon < 0.11.0 - Improper Validation of Integrity Check Value in Invoice Database

Title source: llm
STIX 2.1

Description

Prior to 0.11.0-beta, LND (Lightning Network Daemon) had a vulnerability in its invoice database. While claiming on-chain a received HTLC output, it didn't verify that the corresponding outgoing off-chain HTLC was already settled before releasing the preimage. In the case of a hash-and-amount collision with an invoice, the preimage for an expected payment was instead released. A malicious peer could have deliberately intercepted an HTLC intended for the victim node, probed the preimage through a colluding relayed HTLC, and stolen the intercepted HTLC. The impact is a loss of funds in certain situations, and a weakening of the victim's receiver privacy.

References (3)

Core 3
Core References
Mailing List, Patch, Third Party Advisory x_refsource_misc
https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-October/002857.html

Scores

CVSS v3 8.2
EPSS 0.0073
EPSS Percentile 49.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Details

CWE
CWE-354
Status published
Products (2)
lightning_network_daemon_project/lightning_network_daemon 0.11.0 (5 CPE variants)
lightning_network_daemon_project/lightning_network_daemon < 0.11.0
Published Oct 21, 2020
Tracked Since Feb 18, 2026