github - ghsa-xwrw-2crp-46q4

ghsa-xwrw-2crp-46q4

Vulnerability from github

Published

2025-12-08 21:30

Modified

2025-12-11 15:30

Severity ?

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-65548"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1284"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-08T19:15:50Z",
    "severity": "CRITICAL"
  },
  "details": "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\u0027s db nd disk with arbitrary data.",
  "id": "GHSA-xwrw-2crp-46q4",
  "modified": "2025-12-11T15:30:31Z",
  "published": "2025-12-08T21:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-65548"
    },
    {
      "type": "WEB",
      "url": "https://bitcointalk.org/index.php?topic=5564329"
    },
    {
      "type": "WEB",
      "url": "https://delvingbitcoin.org/t/public-disclosure-denial-of-service-using-htlc-in-cashu/2090"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cashubtc/nuts/blob/main/07.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cashubtc/nuts/blob/main/14.md"
    },
    {
      "type": "WEB",
      "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"
    },
    {
      "type": "WEB",
      "url": "https://preimage007.github.io"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-65548 (GCVE-0-2025-65548)

Vulnerability from cvelistv5

Published

2025-12-08 00:00

Modified

2025-12-11 14:36

Severity ?

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

n/a

Summary

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.

References

URL

Tags

	https://delvingbitcoin.org/t/public-disclosure-denial-of-service-using-htlc-in-cashu/2090
	https://github.com/cashubtc/nuts/blob/main/14.md
	https://github.com/cashubtc/nuts/blob/main/07.md
	https://preimage007.github.io/
	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
	https://bitcointalk.org/index.php?topic=5564329

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-65548",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-09T20:03:40.745059Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-1284",
                "description": "CWE-1284 Improper Validation of Specified Quantity in Input",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-11T14:36:58.193Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "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"
            ],
            "url": "https://bitcointalk.org/index.php?topic=5564329"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "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\u0027s db nd disk with arbitrary data."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-08T18:07:49.838Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://delvingbitcoin.org/t/public-disclosure-denial-of-service-using-htlc-in-cashu/2090"
        },
        {
          "url": "https://github.com/cashubtc/nuts/blob/main/14.md"
        },
        {
          "url": "https://github.com/cashubtc/nuts/blob/main/07.md"
        },
        {
          "url": "https://preimage007.github.io/"
        },
        {
          "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"
        },
        {
          "url": "https://bitcointalk.org/index.php?topic=5564329"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-65548",
    "datePublished": "2025-12-08T00:00:00.000Z",
    "dateReserved": "2025-11-18T00:00:00.000Z",
    "dateUpdated": "2025-12-11T14:36:58.193Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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