CVE-2020-37287
mediumVyper 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…
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.
CVSS
5.9
5.9 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-10-21 01:17
Modified: 2026-10-28 15:17
NVD status: Deferred
Last synced 15 hours ago
Verified against the source API 2026-10-28 15:27 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-4v7v-gqf9-ww2g disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/vyper-before-0.2.6-call-stack-corruption-via-complex-... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 15:27 UTC · record ↗