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CVE-2023-42460

Medium

Description

Vyper is a Pythonic Smart Contract Language for the EVM. The `_abi_decode()` function does not validate input when it is nested in an expression. Uses of `_abi_decode()` can be constructed which allow for bounds checking to be bypassed resulting in incorrect results. This issue has not yet been fixed, but a fix is expected in release `0.3.10`. Users are advised to reference pull request #3626.

SeverityMedium
CVSS5.3
Exploit probability—
ProductVyper
PublishedSep 27, 2023
First seenSep 27, 2023
Weakness typeCWE-682CWE-682

How to fix

Update
  • vyperlang vyper0.3.10 or later
  • vyper0.3.10 or later

Affected products

ProductAffected versionsFixed in
vyperlang vyper0.3.4 ≤ v < 0.3.100.3.10
vyperPyPI0.3.4 ≤ v < 0.3.100.3.10

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