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CVE-2020-37286— Vyper 0.1.0b4 before 0.3.0 Memory Corruption via Nested Internal Function Calls

Quick assessment

Affected
vyperlang vyper
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vyper 0.1.0b4 至 0.3.0 之前的版本存在内存破坏漏洞，该漏洞由内部函数调用出现在元组或嵌套调用中时，栈顶指针指向错误所导致。若合约将此类调用用作元组元素、函数调用参数或内置函数参数（如 或 ），则可能返回被破坏的值，或向外部调用传递错误的参数。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-37286

Vulnerability Information
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Vulnerability Title
Vyper 0.1.0b4 before 0.3.0 Memory Corruption via Nested Internal Function Calls
Source: CVE Program / CVE List V5
Vulnerability 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 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
vyperlang vyper 0.1.0b4 ~ 0.3.0 -

II. Public POCs for CVE-2020-37286

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III. Intelligence Information for CVE-2020-37286

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Other References for CVE-2020-37286 (2)

Same Patch Batch · vyperlang · 2026-10-21 · 12 CVEs total

CVE-2021-48018 7.4 HIGH Vyper 0.2.13 before 0.2.15 Storage Corruption via @nonreentrant Decorator
CVE-2021-48020 6.5 MEDIUM Vyper before 0.3.0 Memory Corruption via Internal Function Calls in Arrays
CVE-2026-114117 5.9 MEDIUM Vyper 0.3.8 through 0.5.0b1 Optimizer Miscompilation of msg.value | K in Ternary Branches
CVE-2020-37287 5.9 MEDIUM Vyper before 0.2.6 Call Stack Corruption via Complex Type Function Arguments
CVE-2026-114116 5.3 MEDIUM Vyper through 0.5.0b1 Literal Value Manipulation via Line Separators
CVE-2026-114114 5.3 MEDIUM Vyper through 0.5.0b1 Literal Value Substitution via Multi-byte Characters
CVE-2021-48019 4.8 MEDIUM Vyper before 0.2.9 Incorrect RETURNDATASIZE in create_forwarder_to Proxies
CVE-2026-114118 4.8 MEDIUM Vyper 0.3.4 through 0.5.0b1 create_from_blueprint Offset Validation Bypass via Unsigned Wr
CVE-2026-114115 3.7 LOW Vyper 0.3.8 through 0.5.0b1 Memory Misread via Ternary Nested Array Selection
CVE-2020-37288 3.7 LOW Vyper 0.1.0b10 before 0.2.3 Invalid Jump Destination via Return in Nested Loops
CVE-2020-37289 3.7 LOW Vyper before 0.3.1 Improper Input Validation of uint8 Interface Return Values

IV. Related Vulnerabilities

Same product: vyper
Same vendor: vyperlang
Same weakness: CWE-787

V. Comments for CVE-2020-37286

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