What’s Vulnerable › Vulnerabilities
CVE-2021-41592
- Severity: critical (CVSS 9.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-10-04 · updated 2026-06-17
- Weakness: CWE-770
Description
Blockstream c-lightning through 0.10.1 allows loss of funds because of dust HTLC exposure.
Affected products
- Elementsproject C-Lightning: through 0.10.1
References
- https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing
- https://github.com/ElementsProject/lightning
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003264.html
- https://bitcoinmagazine.com/technical/good-griefing-a-lingering-vulnerability-on-lightning-network-that-still-needs-fixing
- https://github.com/ElementsProject/lightning
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-May/002714.html
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003257.html
- https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-October/003264.html
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