🛡️ CVE-2026-40583 — ultradag

🟠 CVSS 8.2 — High ⚠️ Exploit Public CWE-460 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability high.

Affected software

CVE-2026-40583 is recorded against 1 package.

  • ultradag

Timeline and source

Published on 21 April 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com
github.com
github.com

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE CWE-460
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-21
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
ultradag — —

Exploit Protection

Are you running ultradag?

CVE-2026-40583 carries CVSS 8.2 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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