{"id":"CVE-2021-41591","aliases":["EUVD-2021-28605","GHSA-r6qw-cx64-86rx"],"status":"published","title":"ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.","description":"ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.","severity":{"version":"3.1","score":9.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01705,"percentile":0.77439,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-770","CWE-863"],"published":"2021-10-04T16:47:56Z","modified":"2026-06-17T04:08:41Z","products":[{"vendor":"acinq","product":"eclair"}],"references":[{"url":"https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html","tags":["x_refsource_MISC","x_transferred","Mailing List","Vendor Advisory"]},{"url":"https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing","tags":["x_refsource_MISC","x_transferred","Press/Media Coverage"]},{"url":"https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory"]},{"url":"https://github.com/ACINQ/eclair/pull/1985","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41591"},{"url":"https://github.com/advisories/GHSA-r6qw-cx64-86rx"}],"sources":{"cve":[{"id":"CVE-2021-41591","description":"ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.","status":"published","published":"2021-10-04T16:47:56Z","modified":"2024-08-04T03:15:29.283Z","updated_at":"2026-11-02T14:32:59.105382Z"}],"euvd":[{"id":"EUVD-2021-28605","description":"ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.","status":"published","published":"2021-10-04T16:47:56Z","modified":"2024-08-04T03:15:29Z","updated_at":"2026-11-03T03:24:17.663217Z"}],"ghsa":[{"id":"GHSA-r6qw-cx64-86rx","title":"ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.","description":"ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.","status":"published","published":"2022-05-24T19:16:26Z","modified":"2023-01-27T05:03:43Z","cvss":[{"version":"3.1","score":9.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","level":"critical"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:42:18.285263Z"}],"nvd":[{"id":"CVE-2021-41591","description":"ACINQ Eclair before 0.6.3 allows loss of funds because of dust HTLC exposure.","status":"published","published":"2021-10-04T17:15:08.627Z","modified":"2026-06-17T04:08:41.997Z","cvss":[{"version":"3.1","score":9.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:06:59.314106Z"}]}}