CVE-2025-65548
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-08

Last updated on: 2025-12-15

Assigner: MITRE

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.
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Meta Information
Published
2025-12-08
Last Modified
2025-12-15
Generated
2026-06-16
AI Q&A
2025-12-08
EPSS Evaluated
2026-06-15
NVD
CVE-2025-65548
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
cashu nutshell to 0.18.0 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-1284 The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
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Executive Summary

This vulnerability in nutshell (cashubtc/nuts) before version 0.18.0 allows cashu tokens to be created with a preimage hash without validating the size of the preimage when the token is spent. As a result, an attacker can exploit this flaw to store arbitrary data in the mint's database and disk.

Impact Analysis

The vulnerability can be exploited by an attacker to fill the mint's database and disk with arbitrary data, potentially leading to resource exhaustion, degraded performance, or denial of service.

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