CVE-2020-37287
MEDIUM
CVSS 5.9
Published: 2026-10-21
Modified: 2026-10-22
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Description
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.
Quick Facts
| CVE ID | CVE-2020-37287 |
| CVSS Score | 5.9 |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
| Published | 2026-10-21 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |