CVE-2023-32058— Vyper vulnerable to integer overflow in loop
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I. Basic Information for CVE-2023-32058
Vulnerability Information
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Vulnerability Title
Vyper vulnerable to integer overflow in loop
Source: NVD (National Vulnerability Database)
Vulnerability Description
Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, due to missing overflow check for loop variables, by assigning the iterator of a loop to a variable, it is possible to overflow the type of the latter. The issue seems to happen only in loops of type `for i in range(a, a + N)` as in loops of type `for i in range(start, stop)` and `for i in range(stop)`, the compiler is able to raise a `TypeMismatch` when trying to overflow the variable. The problem has been patched in version 0.3.8.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vyper 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vyper是EVM 的 Pythonic 智能合约语言。 Vyper 0.3.8之前版本存在输入验证错误漏洞，该漏洞源于缺少对循环变量的溢出检查。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-32058
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- https://github.com/vyperlang/vyper/security/advisories/GHSA-6r8q-pfpv-7cgjx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2023-32058
Same Patch Batch · vyperlang · 2023-05-11 · 3 CVEs total
| CVE-2023-31146 | 7.5 HIGH | Vyper vulnerable to OOB DynArray access when array is on both LHS and RHS of an assignment |
| CVE-2023-32059 | 7.5 HIGH | Vyper vulnerable to incorrect ordering of arguments for kwargs passed to internal calls |
IV. Related Vulnerabilities
Same product: vyper
- CVE-2025-47774
Vyper's `slice()` may elide side-effects when output length - CVE-2025-47285
Vyper's `concat()` builtin may elide side-effects for zero-l - CVE-2025-26622
sqrt doesn't define rounding behavior in Vyper - CVE-2025-27104
double eval in For List Iter in Vyper - CVE-2025-27105
AugAssign evaluation order causing OOB write within the obje
Same vendor: vyperlang
- CVE-2025-47774
Vyper's `slice()` may elide side-effects when output length - CVE-2025-47285
Vyper's `concat()` builtin may elide side-effects for zero-l - CVE-2025-26622
sqrt doesn't define rounding behavior in Vyper - CVE-2025-27104
double eval in For List Iter in Vyper - CVE-2025-27105
AugAssign evaluation order causing OOB write within the obje
Same weakness: CWE-190
- CVE-2026-7568
Signed integer overflow in metaphone() - CVE-2026-42311
Pillow: OOB Write with Invalid PSD Tile Extents (Integer Ove - CVE-2026-42308
Pillow: Integer overflow when processing fonts - CVE-2026-6664
PgBouncer integer overflow in PgBouncer network packet parsi - CVE-2026-42199
Grid: Integer Overflow in Grid::expand_rows Leads to Safe-AP
V. Comments for CVE-2023-32058
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