CVE-2026-40583

HIGH EPSS 29.5%
Published Apr 21, 20262mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 4.0
High
Find Similar
Published Apr 21, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.8
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Red
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
29.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-460
CWE-696

Affected Products 1

VendorProductVersionRange
ultradagultradag0.1.0any

References 3

  • github.com https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be
    Patch
  • github.com https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511
    Patch
  • github.com https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp
    ExploitMitigationVendor Advisory

Remediation

  • github.com https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be
    Patch
  • github.com https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511
    Patch