Description
Bitcoin Core through 31.1 is vulnerable to Denial of Service via undo files having no size limit
Published: 2026-10-30
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

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History

Wed, 04 Nov 2026 12:45:00 +0000

Type Values Removed Values Added
Title Denial of Service via Unlimited Undo Files in Bitcoin Core

Wed, 04 Nov 2026 11:15:00 +0000

Type Values Removed Values Added
Title Bitcoin Core Undo File Size Limiting DoS Vulnerability
Weaknesses CWE-789

Wed, 04 Nov 2026 02:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 30 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Bitcoin
Bitcoin bitcoin Core
Vendors & Products Bitcoin
Bitcoin bitcoin Core

Fri, 30 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Title Bitcoin Core Undo File Size Limiting DoS Vulnerability
Weaknesses CWE-789

Fri, 30 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
Description Bitcoin Core through 31.1 is vulnerable to Denial of Service via undo files having no size limit
References

Subscriptions

Bitcoin Bitcoin Core
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-11-04T01:59:27.387Z

Reserved: 2026-10-27T00:00:00.000Z

Link: CVE-2026-117346

cve-icon Vulnrichment

Updated: 2026-11-04T01:59:09.727Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-30T15:16:46.777

Modified: 2026-11-04T02:17:15.320

Link: CVE-2026-117346

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T12:30:10Z

Weaknesses