{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-114663", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-21T21:59:05.257Z", "datePublished": "2026-10-22T01:43:46.942Z", "dateUpdated": "2026-10-22T01:43:46.942Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-22T01:43:46.942Z"}, "datePublic": "2026-10-07T00:00:00.000Z", "title": "Vyper 0.4.0b1 through 0.5.0b1 Name Shadowing of Imported Constants and Default Arguments", "descriptions": [{"lang": "en", "value": "Vyper 0.4.0b1 through 0.5.0b1 miscompiles unfoldable constants and omitted default arguments from imported modules, because parse_Name resolves their names in the using function's scope rather than at declaration. When a contract's parameter, local, or loop variable shares such a name, attacker-influenced input can replace the intended value, including out-of-range values for narrow types such as uint8, corrupting validation or accounting logic."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use of Incorrectly-Resolved Name or Reference", "cweId": "CWE-706", "type": "CWE"}]}], "affected": [{"vendor": "vyperlang", "product": "vyper", "defaultStatus": "unaffected", "packageURL": "pkg:pypi/vyper", "versions": [{"version": "0.4.0b1", "status": "affected", "versionType": "python", "lessThanOrEqual": "0.5.0b1"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.4.0b1", "versionEndIncluding": "0.5.0b1"}]}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "baseScore": 8.6, "baseSeverity": "HIGH", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS"}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "references": [{"url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-2489-32vh-8rrc", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-2489-32vh-8rrc)"}, {"name": "VulnCheck Advisory: Vyper 0.4.0b1 through 0.5.0b1 Name Shadowing of Imported Constants and Default Arguments", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/vyper-0.4-0b1-through-0.5-0b1-name-shadowing-of-imported-constants-and-default-arguments"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0.4.0b1,0.5.0b1]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "vyper", "source": "cna", "vendor": "vyperlang"}, "product": "vyper", "vendor": "vyperlang"}], "created": "2026-10-22T07:15:14.837272+00:00", "updated": "2026-10-22T08:30:03.222853+00:00", "vendors": ["vyperlang", "vyperlang$PRODUCT$vyper"]}