{"id":"CVE-2025-65548","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-65548","generatedAt":"2026-10-28T09:26:30.153Z","title":"NUT-14 allows cashu tokens to be created with a preimage hash.","description":"NUT-14 allows cashu tokens to be created with a preimage hash. However, nutshell (cashubtc/nuts) before 0.18.0 do not validate the size of preimage when the token is spent. The preimage is stored by the mint and attacker can exploit this vulnerability to fill the mint's db nd disk with arbitrary data.","published":"2025-12-08T19:15:51.000Z","lastModified":"2026-10-18T14:10:00.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-1284"],"affected":["cashu/nutshell"],"epss":{"score":0.00416,"percentile":0.35738,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://bitcointalk.org/index.php?topic=5564329","tags":["Exploit","Issue Tracking"],"source":"cve@mitre.org"},{"url":"https://delvingbitcoin.org/t/public-disclosure-denial-of-service-using-htlc-in-cashu/2090","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"https://github.com/cashubtc/nuts/blob/main/07.md","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/cashubtc/nuts/blob/main/14.md","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/jamesob/delving-bitcoin-archive/blob/master/archive/rendered-topics/2025-11-November/2025-11-02-public-disclosure-denial-of-service-using-htlc-in-cashu-id2090.md","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://preimage007.github.io/","tags":["Product"],"source":"cve@mitre.org"},{"url":"https://bitcointalk.org/index.php?topic=5564329","tags":["Exploit","Issue Tracking"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/jamesob/delving-bitcoin-archive/blob/master/archive/rendered-topics/2025-11-November/2025-11-02-public-disclosure-denial-of-service-using-htlc-in-cashu-id2090.md","tags":["Exploit","Third Party Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-65548","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}