Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.3%
CVSS Severity
CVSS v3 Score 8.2
References
- https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be
- https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511
- https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp
- https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp