CVE-2026-117346

Denial of Service via Unlimited Undo Files in Bitcoin Core

Published Oct 30, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
Bitcoin Core through 31.1 is vulnerable to Denial of Service via undo files having no size limit

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Denial of Service via Unlimited Undo Files in Bitcoin Core
Type Values Removed Values Added
Title Bitcoin Core Undo File Size Limiting DoS Vulnerability
Weaknesses CWE-789
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'}

Type Values Removed Values Added
First Time appeared Bitcoin
Bitcoin bitcoin Core
Vendors & Products Bitcoin
Bitcoin bitcoin Core
Type Values Removed Values Added
Title Bitcoin Core Undo File Size Limiting DoS Vulnerability
Weaknesses CWE-789
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 4, 2026, 1:59 AM
Reserved
Oct 27, 2026, 12:00 AM
Status
Awaiting Analysis
Published
Oct 30, 2026, 3:16 PM
Modified
Nov 4, 2026, 2:17 AM