CVE-2026-40583
High
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.
SeverityHigh
CVSS8.2
Exploit probability—
ProductUltradag
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-460CWE-460CWE-696CWE-696
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ultradag ultradag | 0.1.0 | — |
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