CVE-2025-65548

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:cashu:nutshell:*:*:*:*:*:*:*:*", "matchCriteriaId": "18B13554-7C21-41F2-8C36-1154EBD3CBB4", "versionEndExcluding": "0.18.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "NUT-14 permite que los tokens cashu se creen con un hash de preimagen. Sin embargo, nutshell (cashubtc/nuts) antes de la versi\u00f3n 0.18.0 no valida el tama\u00f1o de la preimagen cuando se gasta el token. La preimagen es almacenada por el mint y el atacante puede explotar esta vulnerabilidad para llenar la base de datos y el disco del mint con datos arbitrarios."}], "id": "CVE-2025-65548", "lastModified": "2026-10-18T14:10:00.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-65548", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-12-09T20:03:40.745059Z", "version": "2.0.3"}}]}, "published": "2025-12-08T19:15:50.677", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking"], "url": "https://bitcointalk.org/index.php?topic=5564329"}, {"source": "cve@mitre.org", "tags": ["Broken Link"], "url": "https://delvingbitcoin.org/t/public-disclosure-denial-of-service-using-htlc-in-cashu/2090"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/cashubtc/nuts/blob/main/07.md"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/cashubtc/nuts/blob/main/14.md"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "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"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://preimage007.github.io/"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Issue Tracking"], "url": "https://bitcointalk.org/index.php?topic=5564329"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"], "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"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1284"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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{"created": "2025-12-09T10:26:34.921065+00:00", "updated": "2025-12-09T10:26:34.921112+00:00", "vendors": ["cashubtc", "cashubtc$PRODUCT$nutshell"]}