{"cve":"CVE-2025-65548","nvd":{"published":"2025-12-08T19:15:50.677","modified":"2026-10-18T14:10:00.110","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-1284"],"references":["https://bitcointalk.org/index.php?topic=5564329","https://delvingbitcoin.org/t/public-disclosure-denial-of-service-using-htlc-in-cashu/2090","https://github.com/cashubtc/nuts/blob/main/07.md","https://github.com/cashubtc/nuts/blob/main/14.md","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"],"products":["cashu:nutshell"],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2025-65548","score":0.00416,"percentile":0.35636,"date":"2026-10-25"},"kev":null,"osv":[{"id":"PYSEC-2025-89","url":"https://osv.dev/vulnerability/PYSEC-2025-89","summary":"","modified":"2026-05-20T09:18:54.109140Z","packages":[{"ecosystem":"PyPI","name":"cashu","purl":"pkg:pypi/cashu","ranges":["<0.18.0"],"fixed":["0.18.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}