CVE-2026-117346: Bitcoin Core through 31.1 is vulnerable to Denial of Service via undo files having no size limit
Source GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 16:48 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
AI-suggested
Users should monitor vendor advisories for updates or fixes addressing this issue. Until a fix is available, consider limiting disk usage or monitoring undo file sizes as a temporary measure.
Description
Bitcoin Core versions up to and including 31.1 have a vulnerability where undo files have no size limit, which can lead to a Denial of Service (DoS) condition.