CVE•Published 2026-04-21•Modified 2026-04-27•1 article on news•5 live references•NVD data
CVE-2026-40583Ultradag · Ultradag
Vulnerability data via NVD (ingested)
CVSS v3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS percentile
12
Exploit Prediction Scoring System · top 88% of all CVEs
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.
Timeline
Published 2026-04-21
Modified 2026-04-27
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-40583Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Ultradag Ultradag" version:"0.1.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Ultradag"HTTP body or banner mentions "Ultradag" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-40583Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40583Censys host search filtered to this CVE id.
grep.app
CVE-2026-40583Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40583GitHub code search for direct mentions.
Google dork
"CVE-2026-40583" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.