{"id":"CVE-2026-114115","published":"2026-10-21T01:17:37.787","lastModified":"2026-10-22T17:39:56.760","description":"Vyper 0.3.8 through 0.5.0b1 contains a compiler miscompilation vulnerability in parse_IfExp that reads nested arrays with narrower inner bounds using the wider result type's memory layout. When a ternary selects the narrower array, inner arrays after the first are read at wrong offsets, causing contracts to silently store corrupted values or revert.","cvssScore":3.7,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","cwes":["CWE-843"],"vendors":[],"products":[],"references":[{"url":"https://github.com/vyperlang/vyper/commit/1fb7dfe2","tags":[]},{"url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-cw3h-xwxq-8cx2","tags":[]},{"url":"https://www.vulncheck.com/advisories/vyper-0.3.8-through-0.5-0b1-memory-misread-via-ternary-nested-array-selection","tags":[]}],"exploitRefs":[{"url":"https://github.com/vyperlang/vyper/commit/1fb7dfe2","tags":[]},{"url":"https://github.com/vyperlang/vyper/security/advisories/GHSA-cw3h-xwxq-8cx2","tags":[]}],"hasPoc":true,"ai":null}