CVE-2026-40583

Description

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.

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