CVE-2020-37286
Vyper 0.1.0b4 before 0.3.0 Memory Corruption via Nested Internal Function Calls
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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 appear inside tuples or nested calls. Contracts using such calls as tuple elements, call arguments, or builtin arguments like concat or ecrecover can return corrupted values or pass wrong arguments to external calls.
| CWE | CWE-787 |
| Vendor | vyperlang |
| Product | vyper |
| Published | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
vyperlang / vyper
0.1.0b4 < 0.3.0