{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40583","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-14T13:24:29.475Z","datePublished":"2026-04-21T16:57:42.100Z","dateUpdated":"2026-04-21T20:37:16.729Z"},"containers":{"cna":{"title":"UltraDAG: SmartOp Vote Path Triggers Fatal Supply Invariant Halt","problemTypes":[{"descriptions":[{"cweId":"CWE-460","lang":"en","description":"CWE-460: Improper Cleanup on Thrown Exception","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-696","lang":"en","description":"CWE-696: Incorrect Behavior Order","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.8,"baseSeverity":"HIGH","vectorString":"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","version":"4.0"}}],"references":[{"name":"https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp"},{"name":"https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be","tags":["x_refsource_MISC"],"url":"https://github.com/UltraDAGcom/core/commit/2f5a3a237ea519b48d71e6e3093c89f60694c7be"},{"name":"https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511","tags":["x_refsource_MISC"],"url":"https://github.com/UltraDAGcom/core/commit/45bcf7064741897319b6196d3d9f9e1307093511"}],"affected":[{"vendor":"UltraDAGcom","product":"core","versions":[{"version":"= 0.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-21T16:57:42.100Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-q8wx-2crx-c7pp","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/UltraDAGcom/core/security/advisories/GHSA-q8wx-2crx-c7pp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-21T20:09:12.285156Z","id":"CVE-2026-40583","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-21T20:37:16.729Z"}}]}}