CVE-2026-114663 - Vyper 0.4.0b1 through 0.5.0b1 Name Shadowing of Imported Constants and Default Arguments

CVE-2026-114663 - Vyper 0.4.0b1 through 0.5.0b1 Name Shadowing of Imported Constants and Default Arguments

https://cvefeed.io/rssfeed/latest.atom / Thu, 10/22/2026 - 05:11
CVE ID :CVE-2026-114663
Published : Oct. 22, 2026, 1:43 a.m. | 37 minutes ago
Description :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.
Severity: 8.4 | HIGH
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