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TI-2025-40387 Aliases CVE-2025-65548GHSA-xwrw-2crp-46q4

NUT-14 allows cashu tokens to be created with a preimage hash.

Priority HIGH 80CWE-1284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00416 36th percentileScored 2026-11-07
Public exploit Yes 4 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cashu:nutshell:*:*:*:*:*:*:*:*before 0.18.0VulnerableCashu
  • cpe:2.3:a:cashu:nutshell:*:*:*:*:*:*:*:* Versions before 0.18.0 Vulnerable ·Cashu

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-65548
  2. 2026-10-03 Alias added: GHSA-xwrw-2crp-46q4

References

Exploit 4

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences