CVE intelligence and bounded remediation

CVE-2020-26895 — Lightning Network Daemon Project Lightning Network Daemon security vulnerability

Medium CVSS 5.3

Prior to 0.10.0-beta, LND (Lightning Network Daemon) would have accepted a counterparty high-S signature and broadcast tx-relay invalid local commitment/HTLC transactions. This can be exploited by any peer with an open channel regardless of the victim situation (e.g., routing node, payment-receiver, or payment-sender). The impact is a loss of funds in certain situations.

Severity
Medium
CVSS
5.3 (3.1)
Published
2020-10-21
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-354

Affected products

  • lightning_network_daemon_project / lightning_network_daemon / 0.1
  • lightning_network_daemon_project / lightning_network_daemon / 0.1.1
  • lightning_network_daemon_project / lightning_network_daemon / 0.2
  • lightning_network_daemon_project / lightning_network_daemon / 0.2.1
  • lightning_network_daemon_project / lightning_network_daemon / 0.3
  • lightning_network_daemon_project / lightning_network_daemon / 0.4

Showing 6 representative product identities from 54 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

General vulnerability remediation

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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