CVE-2026-114115

3.7 LOWpublic exploit available

Published 2026-10-21 · Updated 2026-10-22

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses

CWE-843

Public exploit & PoC references

https://github.com/vyperlang/vyper/commit/1fb7dfe2
https://github.com/vyperlang/vyper/security/advisories/GHSA-cw3h-xwxq-8cx2

All references

https://github.com/vyperlang/vyper/commit/1fb7dfe2
https://github.com/vyperlang/vyper/security/advisories/GHSA-cw3h-xwxq-8cx2
https://www.vulncheck.com/advisories/vyper-0.3.8-through-0.5-0b1-memory-misread-via-ternary-nested-array-selection

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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