HIGH 8.6 NVD
CVE-2026-114663
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 t
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.
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-2489-32vh-8rrc
- https://www.vulncheck.com/advisories/vyper-0.4-0b1-through-0.5-0b1-name-shadowing-of-impor
This high severity vulnerability with a CVSS score of 8.6 was published on 2026-10-22 via NVD.
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