CVE-2020-26895 json
Prior to 0.10.0-beta, LND (Lightning Network Daemon) would have accepted a counterparty high-S signature and broadcast tx-relay invalid loc…
published 2020-10-21 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19425
- cvss
- 5.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-354 Improper Validation of Integrity Check Value
References
-
gist.github.com
/ariard/fb432a9d2cd3ba24fdc18ccc8c5c6eb4
third-party-advisory
-
lists.linuxfoundation.org
/pipermail/lightning-dev/2020-October/002856.html
mailing-list, third-party-advisory
-
lists.linuxfoundation.org
/pipermail/lightning-dev/2020-October/002858.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-26895
- NVD CVE-2020-26895
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.