CVE-2021-48020

MediumCVSS 6.5/10Last modified Oct 22, 2026

Description

Vyper from 0.1.0b4 before 0.3.0 contains a memory corruption vulnerability caused by an incorrect stack tip pointer when internal function calls are performed inside arrays. Contracts placing internal calls in nested array elements, external call arguments, struct literals, or raw_log topics can have memory corrupted, producing incorrect contract behavior.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Oct 21, 2026
Last modified
Oct 22, 2026
NVD status
Deferred
CVE-2021-48020: Medium severity, CVSS 6.5 | Vulnix