{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48486","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-21T15:33:08.291Z","datePublished":"2026-09-03T15:22:35.486Z","dateUpdated":"2026-09-03T18:00:18.434Z"},"containers":{"cna":{"title":"Signum Node: Integer overflow in SMART_FEES fee distribution allows arbitrary miner reward inflation","problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"CWE-190: Integer Overflow or Wraparound","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/signum-network/signum-node/security/advisories/GHSA-4vjp-2m22-r2q9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/signum-network/signum-node/security/advisories/GHSA-4vjp-2m22-r2q9"},{"name":"https://github.com/signum-network/signum-node/releases/tag/v3.9.9","tags":["x_refsource_MISC"],"url":"https://github.com/signum-network/signum-node/releases/tag/v3.9.9"}],"affected":[{"vendor":"signum-network","product":"signum-node","versions":[{"version":"< 3.9.9","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-03T15:22:35.486Z"},"descriptions":[{"lang":"en","value":"Signum Node is a HDD-mined cryptocurrency using an energy efficient and fair Proof-of-Commitment (PoC+) consensus algorithm. Prior to version 3.9.9, an integer overflow in BlockServiceImpl.applyBlock() allowed a miner to receive an arbitrarily inflated block reward by crafting a block with a negative totalFeeCashBackNqt value. The vulnerability was introduced when the SMART_FEES hardfork (block ~1,029,000) enabled fee cash-back and burn accounting without overflow protection. This issue has been patched in version 3.9.9."}],"source":{"advisory":"GHSA-4vjp-2m22-r2q9","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-03T18:00:11.614470Z","id":"CVE-2026-48486","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2026-09-03T18:00:18.434Z"}}]}}