CVE-2026-40583: high-severity vulnerability in UltraDAGcom core
UltraDAG: SmartOp Vote Path Triggers Fatal Supply Invariant Halt
Published
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.6%
exploitation probability
0.6%top 54% of all CVEs
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/U:Red
Affected products
UltraDAGcom · coreRelated CVEs — UltraDAGcom core
In the same product, most dangerous first.