Blockstream c-lightning through 0.10.1 allows loss of funds because of dust HTLC exposure.
https://github.com/ElementsProject/lightning
https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing
https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003264.html
https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html
https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html
Source: Mitre, NVD
Published: 2021-10-04
Updated: 2026-06-17
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.4
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Severity: Critical
EPSS: 0.00634
