{"schema":"threatline.record/2","record":{"id":"CVE-2026-114118","aliases":["GHSA-fxg7-4wqg-c8gh"],"summary":"Vyper 0.3.4 through 0.5.0b1 create_from_blueprint Offset Validation Bypass via Unsigned Wraparound","details":"Vyper 0.3.4 through 0.5.0b1 computes the remaining blueprint size in create_from_blueprint by uint256 subtraction without first checking that code_offset is below the blueprint's code size, so a huge offset wraps to a small positive value. An attacker controlling code_offset can make a factory deploy contracts with no runtime code, potentially trapping ETH and tokens.","categories":["Unclassified"],"product":"vyper","vendor":"vyperlang","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-114118","source_modified_at":"2026-10-21T00:37:15.454Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"vyper","vendor":"vyperlang","versions":[{"version":"0.3.4","status":"affected","versionType":"python","lessThanOrEqual":"0.5.0b1"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00201,"percentile":0.09469,"score_date":"2026-10-23"},"published_at":"2026-10-21T00:37:15.454Z","modified_at":"2026-10-21T00:37:15.454Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-114118","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T00:37:15.454Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-114118","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-fxg7-4wqg-c8gh","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/vyper-0.3.4-through-0.5-0b1-create-from-blueprint-offset-validation-bypass-via-unsigned-wraparound","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-21T00:37:15.454Z","content_hash":"fc3ad7d492798d9158c298ed742e65c28d7fe0a8ce5f1e895c4ca507fa0a85ca"}}