Security Advisory
CVE-2025-65548
CVE vulnerability detail — eXtreme Datacenter Security Operations
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 mints db nd disk with arbitrary data.