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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.

PUBLISHED Reserved 2026-04-14 | Published 2026-04-21 | Updated 2026-04-21 | Assigner GitHub_M




HIGH: 8.8CVSS: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

Problem types

CWE-460: Improper Cleanup on Thrown Exception

CWE-696: Incorrect Behavior Order

Product status

= 0.1
affected

References

github.com/...m/core/security/advisories/GHSA-q8wx-2crx-c7pp exploit

github.com/...m/core/security/advisories/GHSA-q8wx-2crx-c7pp

github.com/...ommit/2f5a3a237ea519b48d71e6e3093c89f60694c7be

github.com/...ommit/45bcf7064741897319b6196d3d9f9e1307093511

cve.org (CVE-2026-40583)

nvd.nist.gov (CVE-2026-40583)

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