CVE-2022-44797

btcd mishandles witness size checking

9.8 CriticalFix available

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.30%Up 0.4 points since Nov 7, 2022

What each source reports

NVD Score used 9.8

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Record: CVE-2022-44797
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

CVE List 9.8

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Record: CVE-2022-44797
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

EUVDEUVD-2022-7197 9.8

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Record: EUVD-2022-7197
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-2chg-86hq-7w38 9.8

btcd mishandles witness size checking

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Specific Go Packages Affected

github.com/btcsuite/btcd/wire

Record: GHSA-2chg-86hq-7w38
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSV 9.8

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Record: CVE-2022-44797
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-2chg-86hq-7w38 9.8

btcd mishandles witness size checking

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Specific Go Packages Affected

github.com/btcsuite/btcd/wire

Record: GHSA-2chg-86hq-7w38
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-44797 9.8

btcd before 0.23.2, as used in Lightning Labs lnd before 0.15.2-beta and other Bitcoin-related products, mishandles witness size checking.

Record: UBUNTU-CVE-2022-44797
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGO-2022-1098 No score

Denial of service in message decoding in github.com/btcsuite/btcd

Erroneous message decoding can cause denial of service.

Improper checking of maximum witness size during node message decoding prevented nodes in Lightning Labs lnd (before 0.15.2-beta) to sync.

Record: GO-2022-1098
Updated: 2026-11-02

Affected products

btcd project btcd

Affected packages

Affected packages
Package	Affected	Fixed
`github.com/lightningnetwork/lnd` Go	before 0.15.2-beta	0.15.2-beta
`github.com/btcsuite/btcd` Go	before 0.23.2	0.23.2
`golang-github-btcsuite-btcd-btcec` Ubuntu:18.04:LTS	All versions, plus listed versions 0.0~git20161101.0.g8343278-1	None known
`golang-github-btcsuite-btcd-btcec` Ubuntu:20.04:LTS	All versions, plus listed versions 0.0~git20161101.0.g8343278-1	None known
`golang-github-btcsuite-btcd-btcec` Ubuntu:22.04:LTS	All versions, plus listed versions 0.0~git20161101.0.g8343278-1.1	None known
`golang-github-btcsuite-btcd-btcec` Ubuntu:24.04:LTS	All versions, plus listed versions 0.0~git20161101.0.g8343278-1.1	None known
`golang-github-btcsuite-btcd-btcec` Ubuntu:25.10	All versions, plus listed versions 0.0~git20161101.0.g8343278-1.1	None known
`golang-github-btcsuite-btcd-btcec` Ubuntu:26.04:LTS	All versions, plus listed versions 0.0~git20161101.0.g8343278-1.10.0~git20161101.0.g8343278-2	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-44797 is a critical vulnerability (CVSS 9.8) in Btcd Project Btcd, published November 7, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.30%, the 70th percentile. Fixed in github.com/lightningnetwork/lnd 0.15.2-beta.

References

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