CVE-2020-37287

CVSS 8.2 (high) · published 2026-10-21

Vyper before 0.2.6 contains a call stack corruption vulnerability that causes incorrect function outputs when complex types with non-base members are passed as arguments. Contracts passing multi-dimensional arrays or structs to internal or external functions receive corrupted values because the compiler assumed each subtype size is 32.

Weakness: CWE-131

Source: NVD CVE-2020-37287

References

• https://github.com/vyperlang/vyper/security/advisories/GHSA-4v7v-gqf9-ww2g
• https://www.vulncheck.com/advisories/vyper-before-0.2.6-call-stack-corruption-via-complex-type-function-arguments

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