CVE-2026-40583

UltraDAG is a minimal DAG-BFT blockchain in Rust. In version 0.1, a non-council attacker can submit a signed SmartOp::Vote transaction that passes signature, nonce, and balance prechecks, but fails authorization only after state mutation has already occurred.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be	Patch
https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511	Patch
https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp	Exploit Mitigation Vendor Advisory
https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ultradag:ultradag:0.1.0:*:*:*:*:*:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) UltraDAG es una cadena de bloques DAG-BFT mínima en Rust. En la versión 0.1, un atacante que no forma parte del consejo puede enviar una transacción SmartOp::Vote firmada que pasa las verificaciones previas de firma, nonce y saldo, pero falla la autorización solo después de que la mutación de estado ya haya ocurrido.

Information

Published : 2026-04-21 17:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-40583

Mitre link : CVE-2026-40583

CVE.ORG link : CVE-2026-40583

JSON object : View

Products Affected

ultradag

ultradag

CWE

CWE-460

Improper Cleanup on Thrown Exception

CWE-696

Incorrect Behavior Order

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