---
id: "CVE-2026-117349"
kind: "vulnerability"
aliases: ["CVE-2026-117349"]
title: "Bitcoin Core: out-of-memory bug can crash the node before 29.5"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["bitcoin-core", "other", "self-hosted"]
not_affected_if: []
published_at: "2026-10-30T15:16:46+00:00"
first_seen_at: "2026-10-30T15:31:09+00:00"
updated_at: "2026-10-30T15:33:55+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117349", "first_seen_at": "2026-10-30T15:31:09+00:00"}]
---

# Bitcoin Core: out-of-memory bug can crash the node before 29.5

Bitcoin Core versions before 29.5, 30.4, 31.2 and 32.1 can run out of memory. The sources do not say what input triggers it or whether an attacker can exploit it beyond crashing the node.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Bitcoin Core version with `bitcoind --version`
- Compare it against the fixed releases 29.5, 30.4, 31.2 and 32.1
- Exposure beyond this is unknown

## Fix

- Upgrade Bitcoin Core to `29.5`, `30.4`, `31.2` or `32.1` on the matching release line

## Timeline

- 2026-10-30T15:31:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117349

## From the sources

Bitcoin Core prior to 29.5, 30.4, 31.2 and 32.1 is vulnerable to an OOM issue.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_